91425 has 24 divisors (see below), whose sum is σ = 160704. Its totient is φ = 45760.

The previous prime is 91423. The next prime is 91433. The reversal of 91425 is 52419.

It is not a de Polignac number, because 91425 - 2¹ = 91423 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91425.

It is not an unprimeable number, because it can be changed into a prime (91423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1699 + ... + 1751.

It is an arithmetic number, because the mean of its divisors is an integer number (6696).

2⁹¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

91425 is a deficient number, since it is larger than the sum of its proper divisors (69279).

91425 is a wasteful number, since it uses less digits than its factorization.

91425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 84 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 91425 is about 302.3656726548. The cubic root of 91425 is about 45.0493286227.

It can be divided in two parts, 914 and 25, that added together give a palindrome (939).

The spelling of 91425 in words is "ninety-one thousand, four hundred twenty-five".