25771552616168 has 16 divisors (see below), whose sum is σ = 51164111811780. Its totient is φ = 12127789466368.

The previous prime is 25771552616153. The next prime is 25771552616231. The reversal of 25771552616168 is 86161625517752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21064813688164 + 4706738928004 = 4589642^2 + 2169502^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25771552616168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94748355071 + ... + 94748355342.

Almost surely, 2^{25771552616168} is an apocalyptic number.

It is an amenable number.

25771552616168 is a deficient number, since it is larger than the sum of its proper divisors (25392559195612).

25771552616168 is a wasteful number, since it uses less digits than its factorization.

25771552616168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189496710436 (or 189496710432 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 62.

The spelling of 25771552616168 in words is "twenty-five trillion, seven hundred seventy-one billion, five hundred fifty-two million, six hundred sixteen thousand, one hundred sixty-eight".