72472225 has 36 divisors (see below), whose sum is σ = 106217904. Its totient is φ = 48898080.

The previous prime is 72472217. The next prime is 72472229. The reversal of 72472225 is 52227427.

It is not a de Polignac number, because 72472225 - 2³ = 72472217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72472229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 81634 + ... + 82516.

Almost surely, 2^72472225 is an apocalyptic number.

It is an amenable number.

72472225 is a deficient number, since it is larger than the sum of its proper divisors (33745679).

72472225 is a wasteful number, since it uses less digits than its factorization.

72472225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 962 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 72472225 is about 8513.0620225627. The cubic root of 72472225 is about 416.9242904569.

The spelling of 72472225 in words is "seventy-two million, four hundred seventy-two thousand, two hundred twenty-five".