25311679313 has 4 divisors (see below), whose sum is σ = 25312004160. Its totient is φ = 25311354468.

The previous prime is 25311679297. The next prime is 25311679319. The reversal of 25311679313 is 31397611352.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25311679313 - 2⁴ = 25311679297 is a prime.

It is a super-2 number, since 2×25311679313² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25311679319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32156 + ... + 227282.

It is an arithmetic number, because the mean of its divisors is an integer number (6328001040).

Almost surely, 2^25311679313 is an apocalyptic number.

It is an amenable number.

25311679313 is a deficient number, since it is larger than the sum of its proper divisors (324847).

25311679313 is a wasteful number, since it uses less digits than its factorization.

25311679313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324846.

The product of its digits is 102060, while the sum is 41.

The spelling of 25311679313 in words is "twenty-five billion, three hundred eleven million, six hundred seventy-nine thousand, three hundred thirteen".