90137625 has 32 divisors (see below), whose sum is σ = 151042944. Its totient is φ = 47736000.

The previous prime is 90137623. The next prime is 90137629. The reversal of 90137625 is 52673109.

It is not a de Polignac number, because 90137625 - 2¹ = 90137623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90137623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58110 + ... + 59640.

It is an arithmetic number, because the mean of its divisors is an integer number (4720092).

Almost surely, 2^90137625 is an apocalyptic number.

It is an amenable number.

90137625 is a deficient number, since it is larger than the sum of its proper divisors (60905319).

90137625 is a wasteful number, since it uses less digits than its factorization.

90137625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 90137625 is about 9494.0836840635. The cubic root of 90137625 is about 448.3687854787.

The spelling of 90137625 in words is "ninety million, one hundred thirty-seven thousand, six hundred twenty-five".