25031317 has 4 divisors (see below), whose sum is σ = 25503660. Its totient is φ = 24558976.

The previous prime is 25031311. The next prime is 25031323. The reversal of 25031317 is 71313052.

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

It is an interprime number because it is at equal distance from previous prime (25031311) and next prime (25031323).

It can be written as a sum of positive squares in 2 ways, for example, as 17380561 + 7650756 = 4169^2 + 2766^2 .

It is a cyclic number.

It is not a de Polignac number, because 25031317 - 2²³ = 16642709 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 (25031311) 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, 236092 + ... + 236197.

It is an arithmetic number, because the mean of its divisors is an integer number (6375915).

Almost surely, 2^25031317 is an apocalyptic number.

It is an amenable number.

25031317 is a deficient number, since it is larger than the sum of its proper divisors (472343).

25031317 is an equidigital number, since it uses as much as digits as its factorization.

25031317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472342.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 25031317 is about 5003.1307198593. The cubic root of 25031317 is about 292.5238181593.

Adding to 25031317 its reverse (71313052), we get a palindrome (96344369).

The spelling of 25031317 in words is "twenty-five million, thirty-one thousand, three hundred seventeen".