25876426979 has 4 divisors (see below), whose sum is σ = 27866921376. Its totient is φ = 23885932584.

The previous prime is 25876426969. The next prime is 25876426999. The reversal of 25876426979 is 97962467852.

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-25876426979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25876426949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995247179 + ... + 995247204.

It is an arithmetic number, because the mean of its divisors is an integer number (6966730344).

Almost surely, 2^25876426979 is an apocalyptic number.

25876426979 is a deficient number, since it is larger than the sum of its proper divisors (1990494397).

25876426979 is a wasteful number, since it uses less digits than its factorization.

25876426979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990494396.

The product of its digits is 91445760, while the sum is 65.

The spelling of 25876426979 in words is "twenty-five billion, eight hundred seventy-six million, four hundred twenty-six thousand, nine hundred seventy-nine".