265 (number)

265 (two hundred [and] sixty-five) is the natural number following 264 and preceding 266.

In mathematics

 * 265 is an odd composite number with two prime factors.
 * 265's sum of its proper divisors is 59.
 * 265 is the number of derangements possible with 6 digits. That means that it is equivalent to !6.
 * The number 265 is associated with the geometric shape known as the Vesica Piscis. This is shown by having 2 circles overlap in a way that the circumference of each circle touches the center of the other. Archimedes estimated that the ratio of the height of this shape to the width was 265:153 or approximately √3.
 * 265 is the 22nd Padovan number which is defined by the two equations P(0)=P(1)=P(2)=1 and P(n)=P(n-2)+P(n-3) similar to the Fibonacci sequence.
 * 265 is the 7th number to be the hypotenuse for two separate Pythagorean Triples. The other two values would be 23 and 264 or 96 and 247.
 * 265 is the sum of two sets of two perfect squares. Those being 11 and 12 or 16 and 3.

In technology

 * High Efficiency Video Coding also known as "H-265," is built upon H.264 and can compress 4k graphics at a quicker rate.
 * In 2021, scientists developed waveguide-coupled germanium photodiodes, which produced a bandwidth of 265 GHz.
 * The Garmin Forerunner 265 is a running watch that has both the functionality of a smartwatch and that of an exercising watch. It provides comprehensive exercising data for the user.

World Records

 * The record for skipping rope on one leg in one minute was set by Gbenga Ezekiel at 265 times.
 * On October 14, 2021, Johnson & Johnson achieved the Guinness World Record for the number of people simultaneously making heart hand gestures. There were 265 participants.
 * On March 5, 2022, Sony achieved the largest synchronized car dance of 265 cars in Dubai.
 * On May 16, 2010, Sai Manapragada received the Guinness World Record for the most languages sung in a single song which was 265.

Other fields

 * The calendar years 265 AD and 265 BC.
 * In the French Republican calendar, The year 265 would be a year 1 cycle and be in 2057.
 * 265 is the number of several different highways in Canada, Japan, and the United States.
 * According to the IUCN SCC Bumblebee Specialist Group, there are 265 species of bees in the bombus genus which contain the bumblebee.