91611325 has 24 divisors (see below), whose sum is σ = 124368776. Its totient is φ = 66528000.

The previous prime is 91611307. The next prime is 91611337. The reversal of 91611325 is 52311619.

It can be written as a sum of positive squares in 12 ways, for example, as 72488196 + 19123129 = 8514^2 + 4373^2 .

It is not a de Polignac number, because 91611325 - 2⁷ = 91611197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91611293 and 91611302.

It is a congruent number.

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, 17515 + ... + 22135.

Almost surely, 2^91611325 is an apocalyptic number.

It is an amenable number.

91611325 is a deficient number, since it is larger than the sum of its proper divisors (32757451).

91611325 is a wasteful number, since it uses less digits than its factorization.

91611325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705 (or 4700 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 91611325 is about 9571.3805169369. The cubic root of 91611325 is about 450.7991150619.

The spelling of 91611325 in words is "ninety-one million, six hundred eleven thousand, three hundred twenty-five".