625755656 has 16 divisors (see below), whose sum is σ = 1173651900. Its totient is φ = 312781824.

The previous prime is 625755643. The next prime is 625755673. The reversal of 625755656 is 656557526.

It can be written as a sum of positive squares in 2 ways, for example, as 611572900 + 14182756 = 24730^2 + 3766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 625755656.

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, 21056 + ... + 41168.

Almost surely, 2^625755656 is an apocalyptic number.

It is an amenable number.

625755656 is a deficient number, since it is larger than the sum of its proper divisors (547896244).

625755656 is a wasteful number, since it uses less digits than its factorization.

625755656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24008 (or 24004 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 47.

The square root of 625755656 is about 25015.1085546315. The cubic root of 625755656 is about 855.3324088515.

The spelling of 625755656 in words is "six hundred twenty-five million, seven hundred fifty-five thousand, six hundred fifty-six".