25679923 has 2 divisors, whose sum is σ = 25679924. Its totient is φ = 25679922.

The previous prime is 25679921. The next prime is 25679959. The reversal of 25679923 is 32997652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25679923 - 2¹ = 25679921 is a prime.

Together with 25679921, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25679923.

It is not a weakly prime, because it can be changed into another prime (25679921) 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, 12839961 + 12839962.

It is an arithmetic number, because the mean of its divisors is an integer number (12839962).

Almost surely, 2^25679923 is an apocalyptic number.

25679923 is a deficient number, since it is larger than the sum of its proper divisors (1).

25679923 is an equidigital number, since it uses as much as digits as its factorization.

25679923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 25679923 is about 5067.5361863533. The cubic root of 25679923 is about 295.0289083994.

The spelling of 25679923 in words is "twenty-five million, six hundred seventy-nine thousand, nine hundred twenty-three".