255604656 has 40 divisors (see below), whose sum is σ = 699156144. Its totient is φ = 80189440.

The previous prime is 255604651. The next prime is 255604667. The reversal of 255604656 is 656406552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (255604651) 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, 155805 + ... + 157436.

Almost surely, 2^255604656 is an apocalyptic number.

It is an amenable number.

255604656 is an abundant number, since it is smaller than the sum of its proper divisors (443551488).

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

255604656 is a wasteful number, since it uses less digits than its factorization.

255604656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313269 (or 313263 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 255604656 is about 15987.6407265112. The cubic root of 255604656 is about 634.6333932803.

The spelling of 255604656 in words is "two hundred fifty-five million, six hundred four thousand, six hundred fifty-six".