25568879 has 4 divisors (see below), whose sum is σ = 29221584. Its totient is φ = 21916176.

The previous prime is 25568861. The next prime is 25568891. The reversal of 25568879 is 97886552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25568879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25568819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826342 + ... + 1826355.

It is an arithmetic number, because the mean of its divisors is an integer number (7305396).

Almost surely, 2^25568879 is an apocalyptic number.

25568879 is a deficient number, since it is larger than the sum of its proper divisors (3652705).

25568879 is an equidigital number, since it uses as much as digits as its factorization.

25568879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652704.

The product of its digits is 1209600, while the sum is 50.

The square root of 25568879 is about 5056.5679071876. The cubic root of 25568879 is about 294.6030436052.

The spelling of 25568879 in words is "twenty-five million, five hundred sixty-eight thousand, eight hundred seventy-nine".