25961423 has 2 divisors, whose sum is σ = 25961424. Its totient is φ = 25961422.

The previous prime is 25961413. The next prime is 25961443. The reversal of 25961423 is 32416952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25961423 - 2⁴ = 25961407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25961423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25961413) 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, 12980711 + 12980712.

It is an arithmetic number, because the mean of its divisors is an integer number (12980712).

Almost surely, 2^25961423 is an apocalyptic number.

25961423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25961423 is an equidigital number, since it uses as much as digits as its factorization.

25961423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 25961423 is about 5095.2353233192. The cubic root of 25961423 is about 296.1030160974.

The spelling of 25961423 in words is "twenty-five million, nine hundred sixty-one thousand, four hundred twenty-three".