90387025 has 12 divisors (see below), whose sum is σ = 113238412. Its totient is φ = 71562240.

The previous prime is 90387019. The next prime is 90387053. The reversal of 90387025 is 52078309.

It can be written as a sum of positive squares in 6 ways, for example, as 61009 + 90326016 = 247^2 + 9504^2 .

It is not a de Polignac number, because 90387025 - 2⁵ = 90386993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16212 + ... + 21061.

Almost surely, 2^90387025 is an apocalyptic number.

It is an amenable number.

90387025 is a deficient number, since it is larger than the sum of its proper divisors (22851387).

90387025 is a wasteful number, since it uses less digits than its factorization.

90387025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37380 (or 37375 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 90387025 is about 9507.2091067779. The cubic root of 90387025 is about 448.7819322254.

The spelling of 90387025 in words is "ninety million, three hundred eighty-seven thousand, twenty-five".