25573859 has 2 divisors, whose sum is σ = 25573860. Its totient is φ = 25573858.

The previous prime is 25573837. The next prime is 25573897. The reversal of 25573859 is 95837552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25573859 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (25573819) 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, 12786929 + 12786930.

It is an arithmetic number, because the mean of its divisors is an integer number (12786930).

Almost surely, 2^25573859 is an apocalyptic number.

25573859 is a deficient number, since it is larger than the sum of its proper divisors (1).

25573859 is an equidigital number, since it uses as much as digits as its factorization.

25573859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 44.

The square root of 25573859 is about 5057.0603120785. The cubic root of 25573859 is about 294.6221687810.

The spelling of 25573859 in words is "twenty-five million, five hundred seventy-three thousand, eight hundred fifty-nine".