255516656 has 20 divisors (see below), whose sum is σ = 495559800. Its totient is φ = 127630272.

The previous prime is 255516649. The next prime is 255516661. The reversal of 255516656 is 656615552.

It is a super-2 number, since 2×255516656² = 130577522986844672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9635 + ... + 24573.

It is an arithmetic number, because the mean of its divisors is an integer number (24777990).

Almost surely, 2^255516656 is an apocalyptic number.

It is an amenable number.

255516656 is a deficient number, since it is larger than the sum of its proper divisors (240043144).

255516656 is a wasteful number, since it uses less digits than its factorization.

255516656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16016 (or 16010 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The square root of 255516656 is about 15984.8883637015. Note that the first 3 decimals coincide. The cubic root of 255516656 is about 634.5605540373.

The spelling of 255516656 in words is "two hundred fifty-five million, five hundred sixteen thousand, six hundred fifty-six".