90371825 has 6 divisors (see below), whose sum is σ = 112061094. Its totient is φ = 72297440.

The previous prime is 90371821. The next prime is 90371843. The reversal of 90371825 is 52817309.

It can be written as a sum of positive squares in 3 ways, for example, as 3341584 + 87030241 = 1828^2 + 9329^2 .

It is not a de Polignac number, because 90371825 - 2² = 90371821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90371821) 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, 1807412 + ... + 1807461.

It is an arithmetic number, because the mean of its divisors is an integer number (18676849).

Almost surely, 2^90371825 is an apocalyptic number.

It is an amenable number.

90371825 is a deficient number, since it is larger than the sum of its proper divisors (21689269).

90371825 is a wasteful number, since it uses less digits than its factorization.

90371825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614883 (or 3614878 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 90371825 is about 9506.4096797897. The cubic root of 90371825 is about 448.7567742348.

The spelling of 90371825 in words is "ninety million, three hundred seventy-one thousand, eight hundred twenty-five".