90042525 has 36 divisors (see below), whose sum is σ = 162167200. Its totient is φ = 47757600.

The previous prime is 90042517. The next prime is 90042529. The reversal of 90042525 is 52524009.

It is not a de Polignac number, because 90042525 - 2³ = 90042517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90042529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43770 + ... + 45780.

Almost surely, 2^90042525 is an apocalyptic number.

It is an amenable number.

90042525 is a deficient number, since it is larger than the sum of its proper divisors (72124675).

90042525 is a wasteful number, since it uses less digits than its factorization.

90042525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 90042525 is about 9489.0739801100. The cubic root of 90042525 is about 448.2110456667.

The spelling of 90042525 in words is "ninety million, forty-two thousand, five hundred twenty-five".