72656415625 has 24 divisors (see below), whose sum is σ = 95594506560. Its totient is φ = 55065870000.

The previous prime is 72656415607. The next prime is 72656415673. The reversal of 72656415625 is 52651465627.

It is a de Polignac number, because none of the positive numbers 2^k-72656415625 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552469 + ... + 671218.

It is an arithmetic number, because the mean of its divisors is an integer number (3983104440).

Almost surely, 2^72656415625 is an apocalyptic number.

It is an amenable number.

72656415625 is a deficient number, since it is larger than the sum of its proper divisors (22938090935).

72656415625 is an equidigital number, since it uses as much as digits as its factorization.

72656415625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223731 (or 1223711 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

The spelling of 72656415625 in words is "seventy-two billion, six hundred fifty-six million, four hundred fifteen thousand, six hundred twenty-five".