89811725 has 12 divisors (see below), whose sum is σ = 112472340. Its totient is φ = 71136000.

The previous prime is 89811719. The next prime is 89811737. The reversal of 89811725 is 52711898.

It can be written as a sum of positive squares in 6 ways, for example, as 18003049 + 71808676 = 4243^2 + 8474^2 .

It is not a de Polignac number, because 89811725 - 2¹² = 89807629 is a prime.

It is a super-2 number, since 2×89811725² = 16132291894951250, which contains 22 as substring.

It is a congruent number.

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, 15260 + ... + 20309.

It is an arithmetic number, because the mean of its divisors is an integer number (9372695).

Almost surely, 2^89811725 is an apocalyptic number.

It is an amenable number.

89811725 is a deficient number, since it is larger than the sum of its proper divisors (22660615).

89811725 is a wasteful number, since it uses less digits than its factorization.

89811725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35680 (or 35675 counting only the distinct ones).

The product of its digits is 40320, while the sum is 41.

The square root of 89811725 is about 9476.9048217232. The cubic root of 89811725 is about 447.8277615026.

The spelling of 89811725 in words is "eighty-nine million, eight hundred eleven thousand, seven hundred twenty-five".