25943373791 has 2 divisors, whose sum is σ = 25943373792. Its totient is φ = 25943373790.

The previous prime is 25943373769. The next prime is 25943373809. The reversal of 25943373791 is 19737334952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25943373791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25943273791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12971686895 + 12971686896.

It is an arithmetic number, because the mean of its divisors is an integer number (12971686896).

Almost surely, 2^25943373791 is an apocalyptic number.

25943373791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25943373791 is an equidigital number, since it uses as much as digits as its factorization.

25943373791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 53.

The spelling of 25943373791 in words is "twenty-five billion, nine hundred forty-three million, three hundred seventy-three thousand, seven hundred ninety-one".