258285125256 has 32 divisors (see below), whose sum is σ = 645779097600. Its totient is φ = 86086203840.

The previous prime is 258285125239. The next prime is 258285125261. The reversal of 258285125256 is 652521582852.

It is a super-2 number, since 2×258285125256² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 258285125199 and 258285125208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311560 + ... + 783351.

It is an arithmetic number, because the mean of its divisors is an integer number (20180596800).

Almost surely, 2^258285125256 is an apocalyptic number.

It is an amenable number.

258285125256 is an abundant number, since it is smaller than the sum of its proper divisors (387493972344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258285125256 is a wasteful number, since it uses less digits than its factorization.

258285125256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104749 (or 1104745 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 51.

The spelling of 258285125256 in words is "two hundred fifty-eight billion, two hundred eighty-five million, one hundred twenty-five thousand, two hundred fifty-six".