561766225 has 6 divisors (see below), whose sum is σ = 696590150. Its totient is φ = 449412960.

The previous prime is 561766201. The next prime is 561766259. The reversal of 561766225 is 522667165.

It can be written as a sum of positive squares in 3 ways, for example, as 25010001 + 536756224 = 5001^2 + 23168^2 .

It is not a de Polignac number, because 561766225 - 2¹³ = 561758033 is a prime.

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, 11235300 + ... + 11235349.

Almost surely, 2^561766225 is an apocalyptic number.

It is an amenable number.

561766225 is a deficient number, since it is larger than the sum of its proper divisors (134823925).

561766225 is a wasteful number, since it uses less digits than its factorization.

561766225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22470659 (or 22470654 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 561766225 is about 23701.6080678084. The cubic root of 561766225 is about 825.1227120803.

The spelling of 561766225 in words is "five hundred sixty-one million, seven hundred sixty-six thousand, two hundred twenty-five".