25578061440912 has 90 divisors (see below), whose sum is σ = 75548866878342. Its totient is φ = 8077282543872.

The previous prime is 25578061440907. The next prime is 25578061441081. The reversal of 25578061440912 is 21904416087552.

25578061440912 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 8 + 0 + 614 + 4 + 0 + 9 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17691647348736 + 7886414092176 = 4206144^2 + 2808276^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 245966613 + ... + 246070580.

Almost surely, 2^{25578061440912} is an apocalyptic number.

It is an amenable number.

25578061440912 is an abundant number, since it is smaller than the sum of its proper divisors (49970805437430).

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

25578061440912 is a wasteful number, since it uses less digits than its factorization.

25578061440912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492037245 (or 492037217 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 25578061440912 in words is "twenty-five trillion, five hundred seventy-eight billion, sixty-one million, four hundred forty thousand, nine hundred twelve".