257572399260 has 48 divisors (see below), whose sum is σ = 786766603392. Its totient is φ = 62441793600.

The previous prime is 257572399247. The next prime is 257572399307. The reversal of 257572399260 is 62993275752.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 257572399260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195129946 + ... + 195131265.

It is an arithmetic number, because the mean of its divisors is an integer number (16390970904).

Almost surely, 2^257572399260 is an apocalyptic number.

257572399260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257572399260 is an abundant number, since it is smaller than the sum of its proper divisors (529194204132).

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

257572399260 is a wasteful number, since it uses less digits than its factorization.

257572399260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390261234 (or 390261232 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 57.

The spelling of 257572399260 in words is "two hundred fifty-seven billion, five hundred seventy-two million, three hundred ninety-nine thousand, two hundred sixty".