90031325 has 6 divisors (see below), whose sum is σ = 111638874. Its totient is φ = 72025040.

The previous prime is 90031321. The next prime is 90031343. The reversal of 90031325 is 52313009.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8797156 + 81234169 = 2966^2 + 9013^2 .

It is not a de Polignac number, because 90031325 - 2² = 90031321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90031325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90031321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1800602 + ... + 1800651.

It is an arithmetic number, because the mean of its divisors is an integer number (18606479).

Almost surely, 2^90031325 is an apocalyptic number.

It is an amenable number.

90031325 is a deficient number, since it is larger than the sum of its proper divisors (21607549).

90031325 is a wasteful number, since it uses less digits than its factorization.

90031325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601263 (or 3601258 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 90031325 is about 9488.4838093343. The cubic root of 90031325 is about 448.1924612187.

The spelling of 90031325 in words is "ninety million, thirty-one thousand, three hundred twenty-five".