564641825 has 24 divisors (see below), whose sum is σ = 808742880. Its totient is φ = 386489600.

The previous prime is 564641809. The next prime is 564641827. The reversal of 564641825 is 528146465.

It is not a de Polignac number, because 564641825 - 2⁴ = 564641809 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (564641827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55715 + ... + 65064.

It is an arithmetic number, because the mean of its divisors is an integer number (33697620).

Almost surely, 2^564641825 is an apocalyptic number.

564641825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

564641825 is a deficient number, since it is larger than the sum of its proper divisors (244101055).

564641825 is a wasteful number, since it uses less digits than its factorization.

564641825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120817 (or 120812 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 564641825 is about 23762.1931858152. The cubic root of 564641825 is about 826.5282111995.

The spelling of 564641825 in words is "five hundred sixty-four million, six hundred forty-one thousand, eight hundred twenty-five".