25859903 has 2 divisors, whose sum is σ = 25859904. Its totient is φ = 25859902.

The previous prime is 25859891. The next prime is 25859959. The reversal of 25859903 is 30995852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25859903 - 2²⁴ = 9082687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25859803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929951 + 12929952.

It is an arithmetic number, because the mean of its divisors is an integer number (12929952).

Almost surely, 2^25859903 is an apocalyptic number.

25859903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859903 is an equidigital number, since it uses as much as digits as its factorization.

25859903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 25859903 is about 5085.2633166828. The cubic root of 25859903 is about 295.7165497827.

It can be divided in two parts, 25859 and 903, that added together give a palindrome (26762).

The spelling of 25859903 in words is "twenty-five million, eight hundred fifty-nine thousand, nine hundred three".