72725938756 has 6 divisors (see below), whose sum is σ = 127270392830. Its totient is φ = 36362969376.

The previous prime is 72725938729. The next prime is 72725938759. The reversal of 72725938756 is 65783952727.

It can be written as a sum of positive squares in only one way, i.e., 58959609856 + 13766328900 = 242816^2 + 117330^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72725938694 and 72725938703.

It is not an unprimeable number, because it can be changed into a prime (72725938759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9090742341 + ... + 9090742348.

Almost surely, 2^72725938756 is an apocalyptic number.

It is an amenable number.

72725938756 is a deficient number, since it is larger than the sum of its proper divisors (54544454074).

72725938756 is a wasteful number, since it uses less digits than its factorization.

72725938756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181484693 (or 18181484691 counting only the distinct ones).

The product of its digits is 44452800, while the sum is 61.

The spelling of 72725938756 in words is "seventy-two billion, seven hundred twenty-five million, nine hundred thirty-eight thousand, seven hundred fifty-six".