91772825 has 24 divisors (see below), whose sum is σ = 116510400. Its totient is φ = 71691200.

The previous prime is 91772819. The next prime is 91772861. The reversal of 91772825 is 52827719.

It is not a de Polignac number, because 91772825 - 2⁴ = 91772809 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 264302 + ... + 264648.

It is an arithmetic number, because the mean of its divisors is an integer number (4854600).

Almost surely, 2^91772825 is an apocalyptic number.

It is an amenable number.

91772825 is a deficient number, since it is larger than the sum of its proper divisors (24737575).

91772825 is a wasteful number, since it uses less digits than its factorization.

91772825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 572 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 91772825 is about 9579.8134115441. The cubic root of 91772825 is about 451.0638615048.

The spelling of 91772825 in words is "ninety-one million, seven hundred seventy-two thousand, eight hundred twenty-five".