72910625 has 10 divisors (see below), whose sum is σ = 91109898. Its totient is φ = 58328000.

The previous prime is 72910613. The next prime is 72910627. The reversal of 72910625 is 52601927.

It can be written as a sum of positive squares in 5 ways, for example, as 55413136 + 17497489 = 7444^2 + 4183^2 .

It is not a de Polignac number, because 72910625 - 2²² = 68716321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72910591 and 72910600.

It is not an unprimeable number, because it can be changed into a prime (72910627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 57704 + ... + 58953.

Almost surely, 2^72910625 is an apocalyptic number.

It is an amenable number.

72910625 is a deficient number, since it is larger than the sum of its proper divisors (18199273).

72910625 is an equidigital number, since it uses as much as digits as its factorization.

72910625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116677 (or 116662 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 72910625 is about 8538.7718671950. The cubic root of 72910625 is about 417.7632890522.

The spelling of 72910625 in words is "seventy-two million, nine hundred ten thousand, six hundred twenty-five".