72207425 has 12 divisors (see below), whose sum is σ = 90426876. Its totient is φ = 57192000.

The previous prime is 72207413. The next prime is 72207433. The reversal of 72207425 is 52470227.

It can be written as a sum of positive squares in 6 ways, for example, as 17106496 + 55100929 = 4136^2 + 7423^2 .

It is not a de Polignac number, because 72207425 - 2⁸ = 72207169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11774 + ... + 16823.

It is an arithmetic number, because the mean of its divisors is an integer number (7535573).

Almost surely, 2^72207425 is an apocalyptic number.

It is an amenable number.

72207425 is a deficient number, since it is larger than the sum of its proper divisors (18219451).

72207425 is a wasteful number, since it uses less digits than its factorization.

72207425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28708 (or 28703 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72207425 is about 8497.4952191808. The cubic root of 72207425 is about 416.4158828660.

The spelling of 72207425 in words is "seventy-two million, two hundred seven thousand, four hundred twenty-five".