25668063634090 has 32 divisors (see below), whose sum is σ = 47563942202064. Its totient is φ = 9966004231680.

The previous prime is 25668063634067. The next prime is 25668063634111. The reversal of 25668063634090 is 9043636086652.

It can be written as a sum of positive squares in 8 ways, for example, as 4393211808001 + 21274851826089 = 2095999^2 + 4612467^2 .

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, 82235139 + ... + 82546678.

Almost surely, 2^{25668063634090} is an apocalyptic number.

25668063634090 is a deficient number, since it is larger than the sum of its proper divisors (21895878567974).

25668063634090 is a wasteful number, since it uses less digits than its factorization.

25668063634090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164782282.

The product of its (nonzero) digits is 33592320, while the sum is 58.

The spelling of 25668063634090 in words is "twenty-five trillion, six hundred sixty-eight billion, sixty-three million, six hundred thirty-four thousand, ninety".