72549425 has 12 divisors (see below), whose sum is σ = 96881820. Its totient is φ = 53574720.

The previous prime is 72549403. The next prime is 72549439. The reversal of 72549425 is 52494527.

It can be written as a sum of positive squares in 6 ways, for example, as 23493409 + 49056016 = 4847^2 + 7004^2 .

It is not a de Polignac number, because 72549425 - 2⁶ = 72549361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111290 + ... + 111939.

It is an arithmetic number, because the mean of its divisors is an integer number (8073485).

Almost surely, 2^72549425 is an apocalyptic number.

It is an amenable number.

72549425 is a deficient number, since it is larger than the sum of its proper divisors (24332395).

72549425 is a wasteful number, since it uses less digits than its factorization.

72549425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223252 (or 223247 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 72549425 is about 8517.5950244186. The cubic root of 72549425 is about 417.0722787988.

The spelling of 72549425 in words is "seventy-two million, five hundred forty-nine thousand, four hundred twenty-five".