25913163 has 6 divisors (see below), whose sum is σ = 34562644. Its totient is φ = 17269564.

The previous prime is 25913159. The next prime is 25913171. The reversal of 25913163 is 36131952.

It is not a de Polignac number, because 25913163 - 2² = 25913159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25913163.

It is not an unprimeable number, because it can be changed into a prime (25913113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7348 + ... + 10286.

Almost surely, 2^25913163 is an apocalyptic number.

25913163 is a deficient number, since it is larger than the sum of its proper divisors (8649481).

25913163 is an frugal number, since it uses more digits than its factorization.

25913163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 2942 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 25913163 is about 5090.4973234449. The cubic root of 25913163 is about 295.9194258105.

The spelling of 25913163 in words is "twenty-five million, nine hundred thirteen thousand, one hundred sixty-three".