25880796391 has 16 divisors (see below), whose sum is σ = 27355838400. Its totient is φ = 24436608768.

The previous prime is 25880796259. The next prime is 25880796407. The reversal of 25880796391 is 19369708852.

It is a cyclic number.

It is not a de Polignac number, because 25880796391 - 2¹¹ = 25880794343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25880796191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655195 + ... + 693571.

It is an arithmetic number, because the mean of its divisors is an integer number (1709739900).

Almost surely, 2^25880796391 is an apocalyptic number.

25880796391 is a deficient number, since it is larger than the sum of its proper divisors (1475042009).

25880796391 is a wasteful number, since it uses less digits than its factorization.

25880796391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38778.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 25880796391 in words is "twenty-five billion, eight hundred eighty million, seven hundred ninety-six thousand, three hundred ninety-one".