91843225 has 12 divisors (see below), whose sum is σ = 114786304. Its totient is φ = 72893520.

The previous prime is 91843181. The next prime is 91843229. The reversal of 91843225 is 52234819.

It is not a de Polignac number, because 91843225 - 2²⁵ = 58288793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91843229) 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, 11289 + ... + 17638.

Almost surely, 2^91843225 is an apocalyptic number.

It is an amenable number.

91843225 is a deficient number, since it is larger than the sum of its proper divisors (22943079).

91843225 is a wasteful number, since it uses less digits than its factorization.

91843225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29064 (or 29059 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 91843225 is about 9583.4871002157. The cubic root of 91843225 is about 451.1791708005.

The spelling of 91843225 in words is "ninety-one million, eight hundred forty-three thousand, two hundred twenty-five".