25183979 has 2 divisors, whose sum is σ = 25183980. Its totient is φ = 25183978.

The previous prime is 25183967. The next prime is 25183993. The reversal of 25183979 is 97938152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25183979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25183999) 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, 12591989 + 12591990.

It is an arithmetic number, because the mean of its divisors is an integer number (12591990).

Almost surely, 2^25183979 is an apocalyptic number.

25183979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25183979 is an equidigital number, since it uses as much as digits as its factorization.

25183979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 25183979 is about 5018.3641757051. The cubic root of 25183979 is about 293.1172986067.

It can be divided in two parts, 25183 and 979, that added together give a palindrome (26162).

The spelling of 25183979 in words is "twenty-five million, one hundred eighty-three thousand, nine hundred seventy-nine".