45665625 has 24 divisors (see below), whose sum is σ = 76120128. Its totient is φ = 24350000.

The previous prime is 45665611. The next prime is 45665629. The reversal of 45665625 is 52656654.

It is a happy number.

It is not a de Polignac number, because 45665625 - 2⁶ = 45665561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45665629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6940 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (3171672).

Almost surely, 2^45665625 is an apocalyptic number.

It is an amenable number.

45665625 is a deficient number, since it is larger than the sum of its proper divisors (30454503).

45665625 is an frugal number, since it uses more digits than its factorization.

45665625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899 (or 4879 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 45665625 is about 6757.6345713571. The cubic root of 45665625 is about 357.4344998751.

The spelling of 45665625 in words is "forty-five million, six hundred sixty-five thousand, six hundred twenty-five".