25887189312 has 84 divisors (see below), whose sum is σ = 78106300480. Its totient is φ = 8174898432.

The previous prime is 25887189281. The next prime is 25887189319. The reversal of 25887189312 is 21398178852.

25887189312 is a `hidden beast` number, since 258 + 8 + 71 + 8 + 9 + 312 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25887189319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1171768 + ... + 1193655.

Almost surely, 2^25887189312 is an apocalyptic number.

It is an amenable number.

25887189312 is an abundant number, since it is smaller than the sum of its proper divisors (52219111168).

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

25887189312 is a wasteful number, since it uses less digits than its factorization.

25887189312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365460 (or 2365447 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 25887189312 in words is "twenty-five billion, eight hundred eighty-seven million, one hundred eighty-nine thousand, three hundred twelve".