72655625 has 20 divisors (see below), whose sum is σ = 103766784. Its totient is φ = 49818000.

The previous prime is 72655577. The next prime is 72655657. The reversal of 72655625 is 52655627.

It is not a de Polignac number, because 72655625 - 2⁸ = 72655369 is a prime.

It is a Duffinian 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, 3929 + ... + 12678.

Almost surely, 2^72655625 is an apocalyptic number.

It is an amenable number.

72655625 is a deficient number, since it is larger than the sum of its proper divisors (31111159).

72655625 is an equidigital number, since it uses as much as digits as its factorization.

72655625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16634 (or 16619 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 72655625 is about 8523.8268987586. The cubic root of 72655625 is about 417.2756871697.

The spelling of 72655625 in words is "seventy-two million, six hundred fifty-five thousand, six hundred twenty-five".