564221725 has 6 divisors (see below), whose sum is σ = 699634970. Its totient is φ = 451377360.

The previous prime is 564221657. The next prime is 564221771. The reversal of 564221725 is 527122465.

It can be written as a sum of positive squares in 3 ways, for example, as 42693156 + 521528569 = 6534^2 + 22837^2 .

It is not a de Polignac number, because 564221725 - 2⁷ = 564221597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11284410 + ... + 11284459.

Almost surely, 2^564221725 is an apocalyptic number.

It is an amenable number.

564221725 is a deficient number, since it is larger than the sum of its proper divisors (135413245).

564221725 is a wasteful number, since it uses less digits than its factorization.

564221725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22568879 (or 22568874 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 564221725 is about 23753.3518687363. The cubic root of 564221725 is about 826.3231781829.

The spelling of 564221725 in words is "five hundred sixty-four million, two hundred twenty-one thousand, seven hundred twenty-five".