25888979 has 2 divisors, whose sum is σ = 25888980. Its totient is φ = 25888978.

The previous prime is 25888969. The next prime is 25888981. The reversal of 25888979 is 97988852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25888979 is a prime.

Together with 25888981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25888969) 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 as a sum of consecutive naturals, namely, 12944489 + 12944490.

It is an arithmetic number, because the mean of its divisors is an integer number (12944490).

Almost surely, 2^25888979 is an apocalyptic number.

25888979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25888979 is an equidigital number, since it uses as much as digits as its factorization.

25888979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 56.

The square root of 25888979 is about 5088.1213625463. The cubic root of 25888979 is about 295.8273394981.

It can be divided in two parts, 25888 and 979, that multiplied together give a palindrome (25344352).

The spelling of 25888979 in words is "twenty-five million, eight hundred eighty-eight thousand, nine hundred seventy-nine".