25560239 has 4 divisors (see below), whose sum is σ = 25572624. Its totient is φ = 25547856.

The previous prime is 25560233. The next prime is 25560247. The reversal of 25560239 is 93206552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25560239 - 2⁸ = 25559983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25560233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (6393156).

Almost surely, 2^25560239 is an apocalyptic number.

25560239 is a deficient number, since it is larger than the sum of its proper divisors (12385).

25560239 is an equidigital number, since it uses as much as digits as its factorization.

25560239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 25560239 is about 5055.7135005853. The cubic root of 25560239 is about 294.5698566848.

The spelling of 25560239 in words is "twenty-five million, five hundred sixty thousand, two hundred thirty-nine".