72472825731 has 16 divisors (see below), whose sum is σ = 101730396800. Its totient is φ = 45765943488.

The previous prime is 72472825709. The next prime is 72472825741. The reversal of 72472825731 is 13752827427.

It is not a de Polignac number, because 72472825731 - 2⁵ = 72472825699 is a prime.

It is a super-2 number, since 2×72472825731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72472825741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343215 + ... + 512583.

It is an arithmetic number, because the mean of its divisors is an integer number (6358149800).

Almost surely, 2^72472825731 is an apocalyptic number.

72472825731 is a deficient number, since it is larger than the sum of its proper divisors (29257571069).

72472825731 is a wasteful number, since it uses less digits than its factorization.

72472825731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176898.

The product of its digits is 1317120, while the sum is 48.

The spelling of 72472825731 in words is "seventy-two billion, four hundred seventy-two million, eight hundred twenty-five thousand, seven hundred thirty-one".