25794542791 has 2 divisors, whose sum is σ = 25794542792. Its totient is φ = 25794542790.

The previous prime is 25794542779. The next prime is 25794542821. The reversal of 25794542791 is 19724549752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25794542791 - 2¹¹ = 25794540743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25794549791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12897271395 + 12897271396.

It is an arithmetic number, because the mean of its divisors is an integer number (12897271396).

Almost surely, 2^25794542791 is an apocalyptic number.

25794542791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25794542791 is an equidigital number, since it uses as much as digits as its factorization.

25794542791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 55.

The spelling of 25794542791 in words is "twenty-five billion, seven hundred ninety-four million, five hundred forty-two thousand, seven hundred ninety-one".