25868454912 has 66 divisors (see below), whose sum is σ = 74694628788. Its totient is φ = 8622815232.

The previous prime is 25868454901. The next prime is 25868454929. The reversal of 25868454912 is 21945486852.

25868454912 is a `hidden beast` number, since 2 + 5 + 8 + 6 + 84 + 549 + 12 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1394238 + ... + 1412669.

Almost surely, 2^25868454912 is an apocalyptic number.

It is an amenable number.

25868454912 is an abundant number, since it is smaller than the sum of its proper divisors (48826173876).

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

25868454912 is a wasteful number, since it uses less digits than its factorization.

25868454912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806933 (or 2806912 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 25868454912 in words is "twenty-five billion, eight hundred sixty-eight million, four hundred fifty-four thousand, nine hundred twelve".