25578923 has 2 divisors, whose sum is σ = 25578924. Its totient is φ = 25578922.

The previous prime is 25578907. The next prime is 25578977. The reversal of 25578923 is 32987552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25578923 - 2⁴ = 25578907 is a prime.

It is not a weakly prime, because it can be changed into another prime (25578983) 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, 12789461 + 12789462.

It is an arithmetic number, because the mean of its divisors is an integer number (12789462).

Almost surely, 2^25578923 is an apocalyptic number.

25578923 is a deficient number, since it is larger than the sum of its proper divisors (1).

25578923 is an equidigital number, since it uses as much as digits as its factorization.

25578923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 25578923 is about 5057.5609734337. The cubic root of 25578923 is about 294.6416140043.

The spelling of 25578923 in words is "twenty-five million, five hundred seventy-eight thousand, nine hundred twenty-three".