561516325 has 6 divisors (see below), whose sum is σ = 696280274. Its totient is φ = 449213040.

The previous prime is 561516313. The next prime is 561516353. The reversal of 561516325 is 523615165.

It can be written as a sum of positive squares in 3 ways, for example, as 32194276 + 529322049 = 5674^2 + 23007^2 .

It is not a de Polignac number, because 561516325 - 2¹⁵ = 561483557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11230302 + ... + 11230351.

Almost surely, 2^561516325 is an apocalyptic number.

It is an amenable number.

561516325 is a deficient number, since it is larger than the sum of its proper divisors (134763949).

561516325 is a wasteful number, since it uses less digits than its factorization.

561516325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22460663 (or 22460658 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 561516325 is about 23696.3356871901. The cubic root of 561516325 is about 825.0003428220. Note that the first 3 decimals are identical.

The spelling of 561516325 in words is "five hundred sixty-one million, five hundred sixteen thousand, three hundred twenty-five".