625440655054344 has 32 divisors (see below), whose sum is σ = 1582440211588320. Its totient is φ = 205968408491136.

The previous prime is 625440655054333. The next prime is 625440655054363. The reversal of 625440655054344 is 443450556044526.

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, 156988114237 + ... + 156988118220.

It is an arithmetic number, because the mean of its divisors is an integer number (49451256612135).

Almost surely, 2^{625440655054344} is an apocalyptic number.

It is an amenable number.

625440655054344 is an abundant number, since it is smaller than the sum of its proper divisors (956999556533976).

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

625440655054344 is a wasteful number, since it uses less digits than its factorization.

625440655054344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313976232549 (or 313976232545 counting only the distinct ones).

The product of its (nonzero) digits is 138240000, while the sum is 57.

The spelling of 625440655054344 in words is "six hundred twenty-five trillion, four hundred forty billion, six hundred fifty-five million, fifty-four thousand, three hundred forty-four".