257497012 has 6 divisors (see below), whose sum is σ = 450619778. Its totient is φ = 128748504.

The previous prime is 257497007. The next prime is 257497033. The reversal of 257497012 is 210794752.

It can be written as a sum of positive squares in only one way, i.e., 171452836 + 86044176 = 13094^2 + 9276^2 .

It is a super-2 number, since 2×257497012² = 132609422377856288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32187123 + ... + 32187130.

Almost surely, 2^257497012 is an apocalyptic number.

It is an amenable number.

257497012 is a deficient number, since it is larger than the sum of its proper divisors (193122766).

257497012 is a wasteful number, since it uses less digits than its factorization.

257497012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64374257 (or 64374255 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 257497012 is about 16046.7134329744. The cubic root of 257497012 is about 636.1957027321.

It can be divided in two parts, 25749 and 7012, that added together give a square (32761 = 181²).

The spelling of 257497012 in words is "two hundred fifty-seven million, four hundred ninety-seven thousand, twelve".