25644647340082 has 16 divisors (see below), whose sum is σ = 38609089234560. Its totient is φ = 12775035751632.

The previous prime is 25644647339921. The next prime is 25644647340101. The reversal of 25644647340082 is 28004374644652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20600532 + ... + 21809887.

It is an arithmetic number, because the mean of its divisors is an integer number (2413068077160).

Almost surely, 2^{25644647340082} is an apocalyptic number.

25644647340082 is a deficient number, since it is larger than the sum of its proper divisors (12964441894478).

25644647340082 is a wasteful number, since it uses less digits than its factorization.

25644647340082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42411537.

The product of its (nonzero) digits is 30965760, while the sum is 55.

The spelling of 25644647340082 in words is "twenty-five trillion, six hundred forty-four billion, six hundred forty-seven million, three hundred forty thousand, eighty-two".