561927025 has 27 divisors (see below), whose sum is σ = 767673739. Its totient is φ = 407726000.

The previous prime is 561927013. The next prime is 561927031. The reversal of 561927025 is 520729165.

The square root of 561927025 is 23705.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 202293729 + 359633296 = 14223^2 + 18964^2 .

It is not a de Polignac number, because 561927025 - 2¹⁵ = 561894257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1303560 + ... + 1303990.

Almost surely, 2^561927025 is an apocalyptic number.

561927025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

561927025 is the 23705-th square number.

561927025 is the 11853-rd centered octagonal number.

It is an amenable number.

561927025 is a deficient number, since it is larger than the sum of its proper divisors (205746714).

561927025 is an equidigital number, since it uses as much as digits as its factorization.

561927025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The cubic root of 561927025 is about 825.2014322957.

The spelling of 561927025 in words is "five hundred sixty-one million, nine hundred twenty-seven thousand, twenty-five".