90688525 has 12 divisors (see below), whose sum is σ = 112964992. Its totient is φ = 72221040.

The previous prime is 90688483. The next prime is 90688529. The reversal of 90688525 is 52588609.

It is not a de Polignac number, because 90688525 - 2⁷ = 90688397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90688529) 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, 2559 + ... + 13708.

Almost surely, 2^90688525 is an apocalyptic number.

It is an amenable number.

90688525 is a deficient number, since it is larger than the sum of its proper divisors (22276467).

90688525 is a wasteful number, since it uses less digits than its factorization.

90688525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16500 (or 16495 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 90688525 is about 9523.0522943014. The cubic root of 90688525 is about 449.2803724387.

The spelling of 90688525 in words is "ninety million, six hundred eighty-eight thousand, five hundred twenty-five".