25681344318652 has 48 divisors (see below), whose sum is σ = 50722287436800. Its totient is φ = 11271618892800.

The previous prime is 25681344318647. The next prime is 25681344318653.

It is a happy number.

25681344318652 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25681344318653) 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, 20354118 + ... + 21578989.

It is an arithmetic number, because the mean of its divisors is an integer number (1056714321600).

Almost surely, 2^{25681344318652} is an apocalyptic number.

25681344318652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25681344318652 is a deficient number, since it is larger than the sum of its proper divisors (25040943118148).

25681344318652 is a wasteful number, since it uses less digits than its factorization.

25681344318652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41933602 (or 41933600 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 58.

The spelling of 25681344318652 in words is "twenty-five trillion, six hundred eighty-one billion, three hundred forty-four million, three hundred eighteen thousand, six hundred fifty-two".