91371725 has 12 divisors (see below), whose sum is σ = 116956800. Its totient is φ = 70738800.

The previous prime is 91371701. The next prime is 91371733. The reversal of 91371725 is 52717319.

It is a happy number.

It is not a de Polignac number, because 91371725 - 2¹⁰ = 91370701 is a prime.

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, 58175 + ... + 59724.

It is an arithmetic number, because the mean of its divisors is an integer number (9746400).

Almost surely, 2^91371725 is an apocalyptic number.

It is an amenable number.

91371725 is a deficient number, since it is larger than the sum of its proper divisors (25585075).

91371725 is a wasteful number, since it uses less digits than its factorization.

91371725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117940 (or 117935 counting only the distinct ones).

The product of its digits is 13230, while the sum is 35.

The square root of 91371725 is about 9558.8558415743. The cubic root of 91371725 is about 450.4057656977.

The spelling of 91371725 in words is "ninety-one million, three hundred seventy-one thousand, seven hundred twenty-five".