25666677666652 has 96 divisors (see below), whose sum is σ = 50334074542080. Its totient is φ = 11353082400000.

The previous prime is 25666677666571. The next prime is 25666677666661.

25666677666652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2592326902 + ... + 2592336802.

It is an arithmetic number, because the mean of its divisors is an integer number (524313276480).

Almost surely, 2^{25666677666652} is an apocalyptic number.

25666677666652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25666677666652 is a deficient number, since it is larger than the sum of its proper divisors (24667396875428).

25666677666652 is a wasteful number, since it uses less digits than its factorization.

25666677666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19963 (or 19961 counting only the distinct ones).

The product of its digits is 8230118400, while the sum is 76.

The spelling of 25666677666652 in words is "twenty-five trillion, six hundred sixty-six billion, six hundred seventy-seven million, six hundred sixty-six thousand, six hundred fifty-two".