91257325 has 12 divisors (see below), whose sum is σ = 113617728. Its totient is φ = 72710000.

The previous prime is 91257319. The next prime is 91257329. The reversal of 91257325 is 52375219.

It is not a de Polignac number, because 91257325 - 2⁵ = 91257293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91257329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997 + ... + 13546.

It is an arithmetic number, because the mean of its divisors is an integer number (9468144).

Almost surely, 2^91257325 is an apocalyptic number.

It is an amenable number.

91257325 is a deficient number, since it is larger than the sum of its proper divisors (22360403).

91257325 is a wasteful number, since it uses less digits than its factorization.

91257325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804 (or 14799 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 91257325 is about 9552.8699876006. The cubic root of 91257325 is about 450.2177135815.

The spelling of 91257325 in words is "ninety-one million, two hundred fifty-seven thousand, three hundred twenty-five".