561716725 has 6 divisors (see below), whose sum is σ = 696528770. Its totient is φ = 449373360.

The previous prime is 561716719. The next prime is 561716761. The reversal of 561716725 is 527617165.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 25979409 + 535737316 = 5097^2 + 23146^2 .

It is not a de Polignac number, because 561716725 - 2³ = 561716717 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, 11234310 + ... + 11234359.

Almost surely, 2^561716725 is an apocalyptic number.

It is an amenable number.

561716725 is a deficient number, since it is larger than the sum of its proper divisors (134812045).

561716725 is a wasteful number, since it uses less digits than its factorization.

561716725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22468679 (or 22468674 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 561716725 is about 23700.5638118590. The cubic root of 561716725 is about 825.0984761543.

The spelling of 561716725 in words is "five hundred sixty-one million, seven hundred sixteen thousand, seven hundred twenty-five".