561064225 has 12 divisors (see below), whose sum is σ = 696390076. Its totient is φ = 448418880.

The previous prime is 561064193. The next prime is 561064249. The reversal of 561064225 is 522460165.

It can be written as a sum of positive squares in 6 ways, for example, as 44502241 + 516561984 = 6671^2 + 22728^2 .

It is not a de Polignac number, because 561064225 - 2⁵ = 561064193 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17059 + ... + 37591.

Almost surely, 2^561064225 is an apocalyptic number.

It is an amenable number.

561064225 is a deficient number, since it is larger than the sum of its proper divisors (135325851).

561064225 is a wasteful number, since it uses less digits than its factorization.

561064225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21636 (or 21631 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 561064225 is about 23686.7943166651. The cubic root of 561064225 is about 824.7788694148.

The spelling of 561064225 in words is "five hundred sixty-one million, sixty-four thousand, two hundred twenty-five".