45021225 has 12 divisors (see below), whose sum is σ = 74435216. Its totient is φ = 24011280.

The previous prime is 45021211. The next prime is 45021227. The reversal of 45021225 is 52212054.

It is a happy number.

It is not a de Polignac number, because 45021225 - 2⁴ = 45021209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45021227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300067 + ... + 300216.

Almost surely, 2^45021225 is an apocalyptic number.

It is an amenable number.

45021225 is a deficient number, since it is larger than the sum of its proper divisors (29413991).

45021225 is a wasteful number, since it uses less digits than its factorization.

45021225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600296 (or 600291 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45021225 is about 6709.7857640911. The cubic root of 45021225 is about 355.7452439260.

Adding to 45021225 its reverse (52212054), we get a palindrome (97233279).

The spelling of 45021225 in words is "forty-five million, twenty-one thousand, two hundred twenty-five".