45515925 has 180 divisors, whose sum is σ = 109829280. Its totient is φ = 18195840.

The previous prime is 45515917. The next prime is 45515927. The reversal of 45515925 is 52951554.

It is not a de Polignac number, because 45515925 - 2³ = 45515917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45515925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45515927) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 2395566 + ... + 2395584.

Almost surely, 2^45515925 is an apocalyptic number.

45515925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45515925 is an abundant number, since it is smaller than the sum of its proper divisors (64313355).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45515925 is a wasteful number, since it uses less digits than its factorization.

45515925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 47 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 45515925 is about 6746.5491178824. The cubic root of 45515925 is about 357.0434944536.

The spelling of 45515925 in words is "forty-five million, five hundred fifteen thousand, nine hundred twenty-five".