91232825 has 6 divisors (see below), whose sum is σ = 113128734. Its totient is φ = 72986240.

The previous prime is 91232819. The next prime is 91232833. The reversal of 91232825 is 52823219.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87616 + 91145209 = 296^2 + 9547^2 .

It is not a de Polignac number, because 91232825 - 2⁴ = 91232809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91232791 and 91232800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1824632 + ... + 1824681.

It is an arithmetic number, because the mean of its divisors is an integer number (18854789).

Almost surely, 2^91232825 is an apocalyptic number.

It is an amenable number.

91232825 is a deficient number, since it is larger than the sum of its proper divisors (21895909).

91232825 is a wasteful number, since it uses less digits than its factorization.

91232825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649323 (or 3649318 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 91232825 is about 9551.5875643790. The cubic root of 91232825 is about 450.1774197521.

The spelling of 91232825 in words is "ninety-one million, two hundred thirty-two thousand, eight hundred twenty-five".