72725264122 has 32 divisors (see below), whose sum is σ = 129874314240. Its totient is φ = 29885811840.

The previous prime is 72725264093. The next prime is 72725264147. The reversal of 72725264122 is 22146252727.

It is a super-2 number, since 2×72725264122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721363 + ... + 815974.

It is an arithmetic number, because the mean of its divisors is an integer number (4058572320).

Almost surely, 2^72725264122 is an apocalyptic number.

72725264122 is a deficient number, since it is larger than the sum of its proper divisors (57149050118).

72725264122 is a wasteful number, since it uses less digits than its factorization.

72725264122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537486.

The product of its digits is 188160, while the sum is 40.

The spelling of 72725264122 in words is "seventy-two billion, seven hundred twenty-five million, two hundred sixty-four thousand, one hundred twenty-two".