25886166352 has 30 divisors (see below), whose sum is σ = 52933098858. Its totient is φ = 12261865536.

The previous prime is 25886166337. The next prime is 25886166353. The reversal of 25886166352 is 25366168852.

It can be written as a sum of positive squares in only one way, i.e., 21604296256 + 4281870096 = 146984^2 + 65436^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25886166352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25886166353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2235063 + ... + 2246614.

Almost surely, 2^25886166352 is an apocalyptic number.

It is an amenable number.

25886166352 is an abundant number, since it is smaller than the sum of its proper divisors (27046932506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25886166352 is a wasteful number, since it uses less digits than its factorization.

25886166352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481723 (or 4481698 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The spelling of 25886166352 in words is "twenty-five billion, eight hundred eighty-six million, one hundred sixty-six thousand, three hundred fifty-two".