25312310317 has 4 divisors (see below), whose sum is σ = 28928354656. Its totient is φ = 21696265980.

The previous prime is 25312310279. The next prime is 25312310329. The reversal of 25312310317 is 71301321352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25312310317 - 2¹⁹ = 25311786029 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 (25312310347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808022159 + ... + 1808022172.

It is an arithmetic number, because the mean of its divisors is an integer number (7232088664).

Almost surely, 2^25312310317 is an apocalyptic number.

It is an amenable number.

25312310317 is a deficient number, since it is larger than the sum of its proper divisors (3616044339).

25312310317 is an equidigital number, since it uses as much as digits as its factorization.

25312310317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616044338.

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

Adding to 25312310317 its reverse (71301321352), we get a palindrome (96613631669).

The spelling of 25312310317 in words is "twenty-five billion, three hundred twelve million, three hundred ten thousand, three hundred seventeen".