25040317 has 4 divisors (see below), whose sum is σ = 25450876. Its totient is φ = 24629760.

The previous prime is 25040297. The next prime is 25040321. The reversal of 25040317 is 71304052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 22905796 = 1461^2 + 4786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25040317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040357) 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, 205188 + ... + 205309.

It is an arithmetic number, because the mean of its divisors is an integer number (6362719).

Almost surely, 2^25040317 is an apocalyptic number.

It is an amenable number.

25040317 is a deficient number, since it is larger than the sum of its proper divisors (410559).

25040317 is an equidigital number, since it uses as much as digits as its factorization.

25040317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410558.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25040317 is about 5004.0300758489. The cubic root of 25040317 is about 292.5588728989.

Adding to 25040317 its reverse (71304052), we get a palindrome (96344369).

The spelling of 25040317 in words is "twenty-five million, forty thousand, three hundred seventeen".