255656656552 has 32 divisors (see below), whose sum is σ = 553694901120. Its totient is φ = 109371831040.

The previous prime is 255656656543. The next prime is 255656656571.

It is a happy number.

255656656552 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85445248 + ... + 85448239.

It is an arithmetic number, because the mean of its divisors is an integer number (17302965660).

Almost surely, 2^255656656552 is an apocalyptic number.

255656656552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255656656552 is an abundant number, since it is smaller than the sum of its proper divisors (298038244568).

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

255656656552 is a wasteful number, since it uses less digits than its factorization.

255656656552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170893521 (or 170893517 counting only the distinct ones).

The product of its digits is 81000000, while the sum is 58.

The spelling of 255656656552 in words is "two hundred fifty-five billion, six hundred fifty-six million, six hundred fifty-six thousand, five hundred fifty-two".