125312091 has 16 divisors (see below), whose sum is σ = 170112000. Its totient is φ = 82038528.

The previous prime is 125312053. The next prime is 125312093. The reversal of 125312091 is 190213521.

It is not a de Polignac number, because 125312091 - 2²⁶ = 58203227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125312093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45835 + ... + 48491.

It is an arithmetic number, because the mean of its divisors is an integer number (10632000).

Almost surely, 2^125312091 is an apocalyptic number.

125312091 is a deficient number, since it is larger than the sum of its proper divisors (44799909).

125312091 is a wasteful number, since it uses less digits than its factorization.

125312091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 125312091 is about 11194.2883203891. The cubic root of 125312091 is about 500.4157754990.

The spelling of 125312091 in words is "one hundred twenty-five million, three hundred twelve thousand, ninety-one".