25630879 has 4 divisors (see below), whose sum is σ = 25665760. Its totient is φ = 25596000.

The previous prime is 25630877. The next prime is 25630921. The reversal of 25630879 is 97803652.

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

It is a cyclic number.

It is not a de Polignac number, because 25630879 - 2¹ = 25630877 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 (25630873) 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, 16314 + ... + 17815.

It is an arithmetic number, because the mean of its divisors is an integer number (6416440).

Almost surely, 2^25630879 is an apocalyptic number.

25630879 is a deficient number, since it is larger than the sum of its proper divisors (34881).

25630879 is an equidigital number, since it uses as much as digits as its factorization.

25630879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34880.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 25630879 is about 5062.6948357569. The cubic root of 25630879 is about 294.8409714538.

The spelling of 25630879 in words is "twenty-five million, six hundred thirty thousand, eight hundred seventy-nine".