25979911 has 8 divisors (see below), whose sum is σ = 27384480. Its totient is φ = 24609312.

The previous prime is 25979879. The next prime is 25979917. The reversal of 25979911 is 11997952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25979911 - 2⁵ = 25979879 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 (25979917) 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 7 ways as a sum of consecutive naturals, for example, 6915 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (3423060).

Almost surely, 2^25979911 is an apocalyptic number.

25979911 is a deficient number, since it is larger than the sum of its proper divisors (1404569).

25979911 is a wasteful number, since it uses less digits than its factorization.

25979911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16985.

The product of its digits is 51030, while the sum is 43.

The square root of 25979911 is about 5097.0492444158. The cubic root of 25979911 is about 296.1732877152.

The spelling of 25979911 in words is "twenty-five million, nine hundred seventy-nine thousand, nine hundred eleven".