625831656959 has 12 divisors (see below), whose sum is σ = 677055997800. Its totient is φ = 576868985568.

The previous prime is 625831656871. The next prime is 625831656973. The reversal of 625831656959 is 959656138526.

It is a de Polignac number, because none of the positive numbers 2^k-625831656959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625831656895 and 625831656904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625831656979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12004124 + ... + 12056145.

It is an arithmetic number, because the mean of its divisors is an integer number (56421333150).

Almost surely, 2^625831656959 is an apocalyptic number.

625831656959 is a deficient number, since it is larger than the sum of its proper divisors (51224340841).

625831656959 is a wasteful number, since it uses less digits than its factorization.

625831656959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24060362 (or 24060325 counting only the distinct ones).

The product of its digits is 104976000, while the sum is 65.

The spelling of 625831656959 in words is "six hundred twenty-five billion, eight hundred thirty-one million, six hundred fifty-six thousand, nine hundred fifty-nine".