45637225 has 6 divisors (see below), whose sum is σ = 56590190. Its totient is φ = 36509760.

The previous prime is 45637219. The next prime is 45637253. The reversal of 45637225 is 52273654.

It can be written as a sum of positive squares in 3 ways, for example, as 10067929 + 35569296 = 3173^2 + 5964^2 .

It is not a de Polignac number, because 45637225 - 2⁹ = 45636713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 912720 + ... + 912769.

Almost surely, 2^45637225 is an apocalyptic number.

It is an amenable number.

45637225 is a deficient number, since it is larger than the sum of its proper divisors (10952965).

45637225 is a wasteful number, since it uses less digits than its factorization.

45637225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825499 (or 1825494 counting only the distinct ones).

The product of its digits is 50400, while the sum is 34.

The square root of 45637225 is about 6755.5329175425. The cubic root of 45637225 is about 357.3603869079.

The spelling of 45637225 in words is "forty-five million, six hundred thirty-seven thousand, two hundred twenty-five".