258 (number)

258 (two hundred [and] fifty-eight) is the natural number following 257 and preceding 259.

In mathematics
258 is:
 * a sphenic number
 * a nontotient
 * the sum of four consecutive prime numbers because 258 = 59 + 61 + 67 + 71
 * 63 + 62 + 6
 * an Ulam number