257272685931 has 32 divisors (see below), whose sum is σ = 355453001728. Its totient is φ = 165347205120.

The previous prime is 257272685911. The next prime is 257272685933. The reversal of 257272685931 is 139586272752.

It is not a de Polignac number, because 257272685931 - 2⁵ = 257272685899 is a prime.

It is a super-2 number, since 2×257272685931² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257272685933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35253675 + ... + 35260971.

It is an arithmetic number, because the mean of its divisors is an integer number (11107906304).

Almost surely, 2^257272685931 is an apocalyptic number.

257272685931 is a deficient number, since it is larger than the sum of its proper divisors (98180315797).

257272685931 is a wasteful number, since it uses less digits than its factorization.

257272685931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731.

The product of its digits is 12700800, while the sum is 57.

The spelling of 257272685931 in words is "two hundred fifty-seven billion, two hundred seventy-two million, six hundred eighty-five thousand, nine hundred thirty-one".