25966857278082 has 96 divisors (see below), whose sum is σ = 62632646392320. Its totient is φ = 7147595347200.

The previous prime is 25966857278039. The next prime is 25966857278137. The reversal of 25966857278082 is 28087275866952.

It is a junction number, because it is equal to n+sod(n) for n = 25966857277995 and 25966857278013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 564207 + ... + 7228557.

It is an arithmetic number, because the mean of its divisors is an integer number (652423399920).

Almost surely, 2^{25966857278082} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25966857278082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31316323196160).

25966857278082 is an abundant number, since it is smaller than the sum of its proper divisors (36665789114238).

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

25966857278082 is a wasteful number, since it uses less digits than its factorization.

25966857278082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664856 (or 6664849 counting only the distinct ones).

The product of its (nonzero) digits is 1625702400, while the sum is 75.

The spelling of 25966857278082 in words is "twenty-five trillion, nine hundred sixty-six billion, eight hundred fifty-seven million, two hundred seventy-eight thousand, eighty-two".