561246025 has 6 divisors (see below), whose sum is σ = 695945102. Its totient is φ = 448996800.

The previous prime is 561246017. The next prime is 561246061. The reversal of 561246025 is 520642165.

It can be written as a sum of positive squares in 3 ways, for example, as 1261129 + 559984896 = 1123^2 + 23664^2 .

It is not a de Polignac number, because 561246025 - 2³ = 561246017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11224896 + ... + 11224945.

Almost surely, 2^561246025 is an apocalyptic number.

It is an amenable number.

561246025 is a deficient number, since it is larger than the sum of its proper divisors (134699077).

561246025 is a wasteful number, since it uses less digits than its factorization.

561246025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22449851 (or 22449846 counting only the distinct ones).

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

The square root of 561246025 is about 23690.6315871907. The cubic root of 561246025 is about 824.8679433564.

The spelling of 561246025 in words is "five hundred sixty-one million, two hundred forty-six thousand, twenty-five".