257513612 has 24 divisors (see below), whose sum is σ = 494995200. Its totient is φ = 116675856.

The previous prime is 257513609. The next prime is 257513617. The reversal of 257513612 is 216315752.

257513612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (257513617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71912 + ... + 75407.

It is an arithmetic number, because the mean of its divisors is an integer number (20624800).

Almost surely, 2^257513612 is an apocalyptic number.

It is an amenable number.

257513612 is a deficient number, since it is larger than the sum of its proper divisors (237481588).

257513612 is a wasteful number, since it uses less digits than its factorization.

257513612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147365 (or 147363 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 257513612 is about 16047.2306645103. The cubic root of 257513612 is about 636.2093735985.

The spelling of 257513612 in words is "two hundred fifty-seven million, five hundred thirteen thousand, six hundred twelve".