25317243 has 12 divisors (see below), whose sum is σ = 41793648. Its totient is φ = 14466960.

The previous prime is 25317221. The next prime is 25317247. The reversal of 25317243 is 34271352.

It is not a de Polignac number, because 25317243 - 2⁵ = 25317211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25317247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200868 + ... + 200993.

It is an arithmetic number, because the mean of its divisors is an integer number (3482804).

Almost surely, 2^25317243 is an apocalyptic number.

25317243 is a deficient number, since it is larger than the sum of its proper divisors (16476405).

25317243 is a wasteful number, since it uses less digits than its factorization.

25317243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401874 (or 401871 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 25317243 is about 5031.6242904255. The cubic root of 25317243 is about 293.6334109223.

Adding to 25317243 its reverse (34271352), we get a palindrome (59588595).

The spelling of 25317243 in words is "twenty-five million, three hundred seventeen thousand, two hundred forty-three".