561252625 has 16 divisors (see below), whose sum is σ = 701253072. Its totient is φ = 448483200.

The previous prime is 561252623. The next prime is 561252683. The reversal of 561252625 is 526252165.

It can be written as a sum of positive squares in 8 ways, for example, as 266375041 + 294877584 = 16321^2 + 17172^2 .

It is not a de Polignac number, because 561252625 - 2¹ = 561252623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561252623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135079 + ... + 139171.

It is an arithmetic number, because the mean of its divisors is an integer number (43828317).

Almost surely, 2^561252625 is an apocalyptic number.

It is an amenable number.

561252625 is a deficient number, since it is larger than the sum of its proper divisors (140000447).

561252625 is a wasteful number, since it uses less digits than its factorization.

561252625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205 (or 5195 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 561252625 is about 23690.7708823499. The cubic root of 561252625 is about 824.8711767020.

The spelling of 561252625 in words is "five hundred sixty-one million, two hundred fifty-two thousand, six hundred twenty-five".