25317071 has 4 divisors (see below), whose sum is σ = 27264552. Its totient is φ = 23369592.

The previous prime is 25317059. The next prime is 25317073. The reversal of 25317071 is 17071352.

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 25317071 - 2¹⁰ = 25316047 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 25317071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25317073) 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, 973721 + ... + 973746.

It is an arithmetic number, because the mean of its divisors is an integer number (6816138).

Almost surely, 2^25317071 is an apocalyptic number.

25317071 is a deficient number, since it is larger than the sum of its proper divisors (1947481).

25317071 is a wasteful number, since it uses less digits than its factorization.

25317071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947480.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 25317071 is about 5031.6071985003. The cubic root of 25317071 is about 293.6327459597.

The spelling of 25317071 in words is "twenty-five million, three hundred seventeen thousand, seventy-one".