25647741317231 has 16 divisors (see below), whose sum is σ = 28737064471968. Its totient is φ = 22684769510400.

The previous prime is 25647741317161. The next prime is 25647741317267. The reversal of 25647741317231 is 13271314774652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25647741317231 is a prime.

It is a super-2 number, since 2×25647741317231² (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 (25647741317281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6134411 + ... + 9430083.

It is an arithmetic number, because the mean of its divisors is an integer number (1796066529498).

Almost surely, 2^{25647741317231} is an apocalyptic number.

25647741317231 is a deficient number, since it is larger than the sum of its proper divisors (3089323154737).

25647741317231 is a wasteful number, since it uses less digits than its factorization.

25647741317231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314842.

The product of its digits is 5927040, while the sum is 53.

The spelling of 25647741317231 in words is "twenty-five trillion, six hundred forty-seven billion, seven hundred forty-one million, three hundred seventeen thousand, two hundred thirty-one".