72188125 has 20 divisors (see below), whose sum is σ = 94969600. Its totient is φ = 54702000.

The previous prime is 72188111. The next prime is 72188131. The reversal of 72188125 is 52188127.

It is not a de Polignac number, because 72188125 - 2⁹ = 72187613 is a prime.

It is a super-2 number, since 2×72188125² = 10422250782031250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8836 + ... + 14914.

It is an arithmetic number, because the mean of its divisors is an integer number (4748480).

Almost surely, 2^72188125 is an apocalyptic number.

It is an amenable number.

72188125 is a deficient number, since it is larger than the sum of its proper divisors (22781475).

72188125 is an equidigital number, since it uses as much as digits as its factorization.

72188125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118 (or 6103 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 72188125 is about 8496.3595145215. The cubic root of 72188125 is about 416.3787789131.

The spelling of 72188125 in words is "seventy-two million, one hundred eighty-eight thousand, one hundred twenty-five".