25601423 has 2 divisors, whose sum is σ = 25601424. Its totient is φ = 25601422.

The previous prime is 25601399. The next prime is 25601453. The reversal of 25601423 is 32410652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25601423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25601453) 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, 12800711 + 12800712.

It is an arithmetic number, because the mean of its divisors is an integer number (12800712).

Almost surely, 2^25601423 is an apocalyptic number.

25601423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25601423 is an equidigital number, since it uses as much as digits as its factorization.

25601423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25601423 is about 5059.7848768500. The cubic root of 25601423 is about 294.7279805992.

The spelling of 25601423 in words is "twenty-five million, six hundred one thousand, four hundred twenty-three".