25317163 has 4 divisors (see below), whose sum is σ = 25553880. Its totient is φ = 25080448.

The previous prime is 25317143. The next prime is 25317167. The reversal of 25317163 is 36171352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25317163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25317167) 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, 118198 + ... + 118411.

It is an arithmetic number, because the mean of its divisors is an integer number (6388470).

Almost surely, 2^25317163 is an apocalyptic number.

25317163 is a deficient number, since it is larger than the sum of its proper divisors (236717).

25317163 is a wasteful number, since it uses less digits than its factorization.

25317163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236716.

The product of its digits is 3780, while the sum is 28.

The square root of 25317163 is about 5031.6163407001. The cubic root of 25317163 is about 293.6331016378.

The spelling of 25317163 in words is "twenty-five million, three hundred seventeen thousand, one hundred sixty-three".