91528625 has 8 divisors (see below), whose sum is σ = 114227880. Its totient is φ = 73222800.

The previous prime is 91528603. The next prime is 91528631. The reversal of 91528625 is 52682519.

It can be written as a sum of positive squares in 4 ways, for example, as 16394401 + 75134224 = 4049^2 + 8668^2 .

It is not a de Polignac number, because 91528625 - 2¹⁶ = 91463089 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365990 + ... + 366239.

It is an arithmetic number, because the mean of its divisors is an integer number (14278485).

Almost surely, 2^91528625 is an apocalyptic number.

It is an amenable number.

91528625 is a deficient number, since it is larger than the sum of its proper divisors (22699255).

91528625 is an equidigital number, since it uses as much as digits as its factorization.

91528625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732244 (or 732234 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 91528625 is about 9567.0593705694. The cubic root of 91528625 is about 450.6634247396.

The spelling of 91528625 in words is "ninety-one million, five hundred twenty-eight thousand, six hundred twenty-five".