25868163 has 4 divisors (see below), whose sum is σ = 34490888. Its totient is φ = 17245440.

The previous prime is 25868159. The next prime is 25868179. The reversal of 25868163 is 36186852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25868163 - 2² = 25868159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25868113) 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 in 3 ways as a sum of consecutive naturals, for example, 4311358 + ... + 4311363.

It is an arithmetic number, because the mean of its divisors is an integer number (8622722).

Almost surely, 2^25868163 is an apocalyptic number.

25868163 is a deficient number, since it is larger than the sum of its proper divisors (8622725).

25868163 is an equidigital number, since it uses as much as digits as its factorization.

25868163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622724.

The product of its digits is 69120, while the sum is 39.

The square root of 25868163 is about 5086.0754025083. The cubic root of 25868163 is about 295.7480317090.

The spelling of 25868163 in words is "twenty-five million, eight hundred sixty-eight thousand, one hundred sixty-three".