25872163 has 4 divisors (see below), whose sum is σ = 25882560. Its totient is φ = 25861768.

The previous prime is 25872157. The next prime is 25872199. The reversal of 25872163 is 36127852.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25872163 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25872563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (6470640).

Almost surely, 2^25872163 is an apocalyptic number.

25872163 is a deficient number, since it is larger than the sum of its proper divisors (10397).

25872163 is an equidigital number, since it uses as much as digits as its factorization.

25872163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396.

The product of its digits is 20160, while the sum is 34.

The square root of 25872163 is about 5086.4686178133. The cubic root of 25872163 is about 295.7632747854.

The spelling of 25872163 in words is "twenty-five million, eight hundred seventy-two thousand, one hundred sixty-three".