91765425 has 48 divisors (see below), whose sum is σ = 162132480. Its totient is φ = 45696000.

The previous prime is 91765417. The next prime is 91765433. The reversal of 91765425 is 52456719.

It is an interprime number because it is at equal distance from previous prime (91765417) and next prime (91765433).

It is not a de Polignac number, because 91765425 - 2³ = 91765417 is a prime.

It is a super-3 number, since 3×91765425³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66745 + ... + 68105.

It is an arithmetic number, because the mean of its divisors is an integer number (3377760).

Almost surely, 2^91765425 is an apocalyptic number.

It is an amenable number.

91765425 is a deficient number, since it is larger than the sum of its proper divisors (70367055).

91765425 is a wasteful number, since it uses less digits than its factorization.

91765425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1429 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 91765425 is about 9579.4271749411. The cubic root of 91765425 is about 451.0517375008.

The spelling of 91765425 in words is "ninety-one million, seven hundred sixty-five thousand, four hundred twenty-five".