25278034668816 has 40 divisors (see below), whose sum is σ = 65307467083360. Its totient is φ = 8425253166336.

The previous prime is 25278034668793. The next prime is 25278034668841. The reversal of 25278034668816 is 61886643087252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23160706 + ... + 24227553.

It is an arithmetic number, because the mean of its divisors is an integer number (1632686677084).

Almost surely, 2^{25278034668816} is an apocalyptic number.

It is an amenable number.

25278034668816 is an abundant number, since it is smaller than the sum of its proper divisors (40029432414544).

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

25278034668816 is a wasteful number, since it uses less digits than its factorization.

25278034668816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47399383 (or 47399377 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 66.

The spelling of 25278034668816 in words is "twenty-five trillion, two hundred seventy-eight billion, thirty-four million, six hundred sixty-eight thousand, eight hundred sixteen".