25644344344652 has 48 divisors (see below), whose sum is σ = 49443452019360. Its totient is φ = 11540796096000.

The previous prime is 25644344344607. The next prime is 25644344344691.

25644344344652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25644344344652² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264356174 + ... + 264453162.

It is an arithmetic number, because the mean of its divisors is an integer number (1030071917070).

Almost surely, 2^{25644344344652} is an apocalyptic number.

25644344344652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25644344344652 is a deficient number, since it is larger than the sum of its proper divisors (23799107674708).

25644344344652 is a wasteful number, since it uses less digits than its factorization.

25644344344652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156602 (or 156600 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 56.

The spelling of 25644344344652 in words is "twenty-five trillion, six hundred forty-four billion, three hundred forty-four million, three hundred forty-four thousand, six hundred fifty-two".