257625714864 has 40 divisors (see below), whose sum is σ = 760609254400. Its totient is φ = 73607347008.

The previous prime is 257625714859. The next prime is 257625714901. The reversal of 257625714864 is 468417526752.

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, 383371264 + ... + 383371935.

It is an arithmetic number, because the mean of its divisors is an integer number (19015231360).

Almost surely, 2^257625714864 is an apocalyptic number.

257625714864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257625714864 is an abundant number, since it is smaller than the sum of its proper divisors (502983539536).

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

257625714864 is a wasteful number, since it uses less digits than its factorization.

257625714864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766743217 (or 766743211 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 57.

The spelling of 257625714864 in words is "two hundred fifty-seven billion, six hundred twenty-five million, seven hundred fourteen thousand, eight hundred sixty-four".