25887140308 has 12 divisors (see below), whose sum is σ = 45591047572. Its totient is φ = 12861126720.

The previous prime is 25887140221. The next prime is 25887140309. The reversal of 25887140308 is 80304178852.

It can be written as a sum of positive squares in 2 ways, for example, as 15742219024 + 10144921284 = 125468^2 + 100722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25887140309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20610153 + ... + 20611408.

Almost surely, 2^25887140308 is an apocalyptic number.

It is an amenable number.

25887140308 is a deficient number, since it is larger than the sum of its proper divisors (19703907264).

25887140308 is a wasteful number, since it uses less digits than its factorization.

25887140308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41221722 (or 41221720 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 25887140308 in words is "twenty-five billion, eight hundred eighty-seven million, one hundred forty thousand, three hundred eight".