25967979 has 8 divisors (see below), whose sum is σ = 38471120. Its totient is φ = 17311968.

The previous prime is 25967947. The next prime is 25967983. The reversal of 25967979 is 97976952.

It is not a de Polignac number, because 25967979 - 2⁵ = 25967947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25967479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480862 + ... + 480915.

It is an arithmetic number, because the mean of its divisors is an integer number (4808890).

Almost surely, 2^25967979 is an apocalyptic number.

25967979 is a deficient number, since it is larger than the sum of its proper divisors (12503141).

25967979 is an equidigital number, since it uses as much as digits as its factorization.

25967979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961786 (or 961780 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 25967979 is about 5095.8786288529. The cubic root of 25967979 is about 296.1279388195.

The spelling of 25967979 in words is "twenty-five million, nine hundred sixty-seven thousand, nine hundred seventy-nine".