25801163 has 4 divisors (see below), whose sum is σ = 26127840. Its totient is φ = 25474488.

The previous prime is 25801141. The next prime is 25801199. The reversal of 25801163 is 36110852.

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

It is a cyclic number.

It is not a de Polignac number, because 25801163 - 2²² = 21606859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25801103) 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, 163220 + ... + 163377.

It is an arithmetic number, because the mean of its divisors is an integer number (6531960).

Almost surely, 2^25801163 is an apocalyptic number.

25801163 is a deficient number, since it is larger than the sum of its proper divisors (326677).

25801163 is an equidigital number, since it uses as much as digits as its factorization.

25801163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326676.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25801163 is about 5079.4845210907. The cubic root of 25801163 is about 295.4924762577.

The spelling of 25801163 in words is "twenty-five million, eight hundred one thousand, one hundred sixty-three".