25683733595491 has 2 divisors, whose sum is σ = 25683733595492. Its totient is φ = 25683733595490.

The previous prime is 25683733595431. The next prime is 25683733595539. The reversal of 25683733595491 is 19459533738652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25683733595491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25683733595491.

It is not a weakly prime, because it can be changed into another prime (25683733595411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841866797745 + 12841866797746.

It is an arithmetic number, because the mean of its divisors is an integer number (12841866797746).

Almost surely, 2^{25683733595491} is an apocalyptic number.

25683733595491 is a deficient number, since it is larger than the sum of its proper divisors (1).

25683733595491 is an equidigital number, since it uses as much as digits as its factorization.

25683733595491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832000, while the sum is 70.

The spelling of 25683733595491 in words is "twenty-five trillion, six hundred eighty-three billion, seven hundred thirty-three million, five hundred ninety-five thousand, four hundred ninety-one".