255139256 has 16 divisors (see below), whose sum is σ = 481599000. Its totient is φ = 126712864.

The previous prime is 255139249. The next prime is 255139319. The reversal of 255139256 is 652931552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105830 + ... + 108213.

Almost surely, 2^255139256 is an apocalyptic number.

It is an amenable number.

255139256 is a deficient number, since it is larger than the sum of its proper divisors (226459744).

255139256 is a wasteful number, since it uses less digits than its factorization.

255139256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214198 (or 214194 counting only the distinct ones).

The product of its digits is 81000, while the sum is 38.

The square root of 255139256 is about 15973.0791020392. The cubic root of 255139256 is about 634.2479832121.

The spelling of 255139256 in words is "two hundred fifty-five million, one hundred thirty-nine thousand, two hundred fifty-six".