72881025 has 24 divisors (see below), whose sum is σ = 137711424. Its totient is φ = 33316800.

The previous prime is 72880999. The next prime is 72881041. The reversal of 72881025 is 52018827.

It is not a de Polignac number, because 72881025 - 2⁶ = 72880961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68886 + ... + 69935.

It is an arithmetic number, because the mean of its divisors is an integer number (5737976).

Almost surely, 2^72881025 is an apocalyptic number.

72881025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72881025 is a deficient number, since it is larger than the sum of its proper divisors (64830399).

72881025 is a wasteful number, since it uses less digits than its factorization.

72881025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138841 (or 138836 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 72881025 is about 8537.0384209045. The cubic root of 72881025 is about 417.7067473746.

The spelling of 72881025 in words is "seventy-two million, eight hundred eighty-one thousand, twenty-five".