91795725 has 72 divisors (see below), whose sum is σ = 189571200. Its totient is φ = 41592960.

The previous prime is 91795723. The next prime is 91795741. The reversal of 91795725 is 52759719.

91795725 is a `hidden beast` number, since 9 + 1 + 79 + 572 + 5 = 666.

It is not a de Polignac number, because 91795725 - 2¹ = 91795723 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91795721) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 262851 + ... + 263199.

Almost surely, 2^91795725 is an apocalyptic number.

It is an amenable number.

91795725 is an abundant number, since it is smaller than the sum of its proper divisors (97775475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91795725 is a wasteful number, since it uses less digits than its factorization.

91795725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 531 counting only the distinct ones).

The product of its digits is 198450, while the sum is 45.

The square root of 91795725 is about 9581.0085586018. The cubic root of 91795725 is about 451.1013762534.

The spelling of 91795725 in words is "ninety-one million, seven hundred ninety-five thousand, seven hundred twenty-five".