72115925 has 72 divisors (see below), whose sum is σ = 115200960. Its totient is φ = 43718400.

The previous prime is 72115903. The next prime is 72115931. The reversal of 72115925 is 52951127.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-72115925 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72115891 and 72115900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1758905 + ... + 1758945.

Almost surely, 2^72115925 is an apocalyptic number.

It is an amenable number.

72115925 is a deficient number, since it is larger than the sum of its proper divisors (43085035).

72115925 is a wasteful number, since it uses less digits than its factorization.

72115925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 95 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 72115925 is about 8492.1095730095. The cubic root of 72115925 is about 416.2399168500.

The spelling of 72115925 in words is "seventy-two million, one hundred fifteen thousand, nine hundred twenty-five".