45815625 has 60 divisors (see below), whose sum is σ = 86017932. Its totient is φ = 24300000.

The previous prime is 45815617. The next prime is 45815641. The reversal of 45815625 is 52651854.

45815625 is a `hidden beast` number, since 4 + 581 + 56 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 45441081 + 374544 = 6741^2 + 612^2 .

It is not a de Polignac number, because 45815625 - 2³ = 45815617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45815625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 253035 + ... + 253215.

It is a vampire number, since it can be written as 5625 ⋅ 8145 (with its own digits).

Almost surely, 2^45815625 is an apocalyptic number.

45815625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45815625 is a deficient number, since it is larger than the sum of its proper divisors (40202307).

45815625 is an frugal number, since it uses more digits than its factorization.

45815625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 189 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 45815625 is about 6768.7240304211. The cubic root of 45815625 is about 357.8254327178.

The spelling of 45815625 in words is "forty-five million, eight hundred fifteen thousand, six hundred twenty-five".