25982979 has 16 divisors (see below), whose sum is σ = 37946880. Its totient is φ = 15683360.

The previous prime is 25982969. The next prime is 25982993. The reversal of 25982979 is 97928952.

It is not a de Polignac number, because 25982979 - 2¹⁶ = 25917443 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25982959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7414 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (2371680).

Almost surely, 2^25982979 is an apocalyptic number.

25982979 is a deficient number, since it is larger than the sum of its proper divisors (11963901).

25982979 is a wasteful number, since it uses less digits than its factorization.

25982979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its digits is 816480, while the sum is 51.

The square root of 25982979 is about 5097.3501939733. The cubic root of 25982979 is about 296.1849457470.

It can be divided in two parts, 259 and 82979, that added together give a palindrome (83238).

The spelling of 25982979 in words is "twenty-five million, nine hundred eighty-two thousand, nine hundred seventy-nine".