91012125 has 32 divisors (see below), whose sum is σ = 156349440. Its totient is φ = 46968000.

The previous prime is 91012099. The next prime is 91012133. The reversal of 91012125 is 52121019.

It is not a de Polignac number, because 91012125 - 2¹¹ = 91010077 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7711 + ... + 15539.

It is an arithmetic number, because the mean of its divisors is an integer number (4885920).

Almost surely, 2^91012125 is an apocalyptic number.

It is an amenable number.

91012125 is a deficient number, since it is larger than the sum of its proper divisors (65337315).

91012125 is a wasteful number, since it uses less digits than its factorization.

91012125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878 (or 7868 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 91012125 is about 9540.0275156836. The cubic root of 91012125 is about 449.8141207612.

The spelling of 91012125 in words is "ninety-one million, twelve thousand, one hundred twenty-five".