564639525 has 48 divisors (see below), whose sum is σ = 1043683200. Its totient is φ = 299278080.

The previous prime is 564639521. The next prime is 564639527. The reversal of 564639525 is 525936465.

564639525 is a `hidden beast` number, since 5 + 6 + 4 + 639 + 5 + 2 + 5 = 666.

It is not a de Polignac number, because 564639525 - 2² = 564639521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564639521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110221 + ... + 115229.

It is an arithmetic number, because the mean of its divisors is an integer number (21743400).

Almost surely, 2^564639525 is an apocalyptic number.

It is an amenable number.

564639525 is a deficient number, since it is larger than the sum of its proper divisors (479043675).

564639525 is a wasteful number, since it uses less digits than its factorization.

564639525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195 (or 5184 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 564639525 is about 23762.1447895597. The cubic root of 564639525 is about 826.5270889439.

564639525 divided by its sum of digits (45) gives a triangular number (12547545 = T₅₀₀₉).

The spelling of 564639525 in words is "five hundred sixty-four million, six hundred thirty-nine thousand, five hundred twenty-five".