25258979 has 2 divisors, whose sum is σ = 25258980. Its totient is φ = 25258978.

The previous prime is 25258967. The next prime is 25258997. The reversal of 25258979 is 97985252.

Together with next prime (25258997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25258979 - 2⁴ = 25258963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25258939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12629489 + 12629490.

It is an arithmetic number, because the mean of its divisors is an integer number (12629490).

Almost surely, 2^25258979 is an apocalyptic number.

25258979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25258979 is an equidigital number, since it uses as much as digits as its factorization.

25258979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 47.

The square root of 25258979 is about 5025.8311750396. The cubic root of 25258979 is about 293.4079861933.

The spelling of 25258979 in words is "twenty-five million, two hundred fifty-eight thousand, nine hundred seventy-nine".