25859959 has 2 divisors, whose sum is σ = 25859960. Its totient is φ = 25859958.

The previous prime is 25859903. The next prime is 25859987. The reversal of 25859959 is 95995852.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25859959 - 2⁷ = 25859831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25859459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929979 + 12929980.

It is an arithmetic number, because the mean of its divisors is an integer number (12929980).

Almost surely, 2^25859959 is an apocalyptic number.

25859959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859959 is an equidigital number, since it uses as much as digits as its factorization.

25859959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 52.

The square root of 25859959 is about 5085.2688227861. The cubic root of 25859959 is about 295.7167632420.

It can be divided in two parts, 2585 and 9959, that added together give a square (12544 = 112²).

The spelling of 25859959 in words is "twenty-five million, eight hundred fifty-nine thousand, nine hundred fifty-nine".