25679281748399 has 8 divisors (see below), whose sum is σ = 26166472194720. Its totient is φ = 25196665860576.

The previous prime is 25679281748387. The next prime is 25679281748411. The reversal of 25679281748399 is 99384718297652.

It is an interprime number because it is at equal distance from previous prime (25679281748387) and next prime (25679281748411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25679281748399 is a prime.

It is a super-2 number, since 2×25679281748399² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25679281748359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143628292 + ... + 1143650745.

It is an arithmetic number, because the mean of its divisors is an integer number (3270809024340).

Almost surely, 2^{25679281748399} is an apocalyptic number.

25679281748399 is a deficient number, since it is larger than the sum of its proper divisors (487190446321).

25679281748399 is a wasteful number, since it uses less digits than its factorization.

25679281748399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287279249.

The product of its digits is 3292047360, while the sum is 80.

The spelling of 25679281748399 in words is "twenty-five trillion, six hundred seventy-nine billion, two hundred eighty-one million, seven hundred forty-eight thousand, three hundred ninety-nine".