45216525 has 12 divisors (see below), whose sum is σ = 74758112. Its totient is φ = 24115440.

The previous prime is 45216517. The next prime is 45216527. The reversal of 45216525 is 52561254.

It is not a de Polignac number, because 45216525 - 2³ = 45216517 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45216492 and 45216501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45216527) 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, 301369 + ... + 301518.

Almost surely, 2^45216525 is an apocalyptic number.

It is an amenable number.

45216525 is a deficient number, since it is larger than the sum of its proper divisors (29541587).

45216525 is a wasteful number, since it uses less digits than its factorization.

45216525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602900 (or 602895 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 45216525 is about 6724.3233860367. The cubic root of 45216525 is about 356.2589040557.

Adding to 45216525 its reverse (52561254), we get a palindrome (97777779).

The spelling of 45216525 in words is "forty-five million, two hundred sixteen thousand, five hundred twenty-five".