91868725 has 24 divisors (see below), whose sum is σ = 124540640. Its totient is φ = 66813120.

The previous prime is 91868713. The next prime is 91868747. The reversal of 91868725 is 52786819.

It is not a de Polignac number, because 91868725 - 2²⁵ = 58314293 is a prime.

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, 19666 + ... + 23884.

Almost surely, 2^91868725 is an apocalyptic number.

It is an amenable number.

91868725 is a deficient number, since it is larger than the sum of its proper divisors (32671915).

91868725 is a wasteful number, since it uses less digits than its factorization.

91868725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309 (or 4304 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 91868725 is about 9584.8174213179. The cubic root of 91868725 is about 451.2209231245.

The spelling of 91868725 in words is "ninety-one million, eight hundred sixty-eight thousand, seven hundred twenty-five".