91113825 has 24 divisors (see below), whose sum is σ = 164337696. Its totient is φ = 44176000.

The previous prime is 91113811. The next prime is 91113859. The reversal of 91113825 is 52831119.

It is not a de Polignac number, because 91113825 - 2⁵ = 91113793 is a prime.

It is a super-2 number, since 2×91113825² = 16603458212261250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91113792 and 91113801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54396 + ... + 56045.

It is an arithmetic number, because the mean of its divisors is an integer number (6847404).

Almost surely, 2^91113825 is an apocalyptic number.

It is an amenable number.

91113825 is a deficient number, since it is larger than the sum of its proper divisors (73223871).

91113825 is a wasteful number, since it uses less digits than its factorization.

91113825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110465 (or 110460 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 91113825 is about 9545.3562007921. The cubic root of 91113825 is about 449.9816041863.

The spelling of 91113825 in words is "ninety-one million, one hundred thirteen thousand, eight hundred twenty-five".