255656831922 has 54 divisors (see below), whose sum is σ = 569475450999. Its totient is φ = 82889987040.

The previous prime is 255656831921. The next prime is 255656831923. The reversal of 255656831922 is 229138656552.

255656831922 is a `hidden beast` number, since 2 + 5 + 56 + 568 + 3 + 1 + 9 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (255656831921) and next prime (255656831923).

It can be written as a sum of positive squares in 5 ways, for example, as 255175512201 + 481319721 = 505149^2 + 21939^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=357531.

It is not an unprimeable number, because it can be changed into a prime (255656831921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 79370272 + ... + 79373492.

Almost surely, 2^255656831922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255656831922

255656831922 is an abundant number, since it is smaller than the sum of its proper divisors (313818619077).

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

255656831922 is an frugal number, since it uses more digits than its factorization.

255656831922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524 (or 3263 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 255656831922 in words is "two hundred fifty-five billion, six hundred fifty-six million, eight hundred thirty-one thousand, nine hundred twenty-two".