25969339651 has 2 divisors, whose sum is σ = 25969339652. Its totient is φ = 25969339650.

The previous prime is 25969339609. The next prime is 25969339661. The reversal of 25969339651 is 15693396952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25969339651 - 2⁹ = 25969339139 is a prime.

It is not a weakly prime, because it can be changed into another prime (25969339661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12984669825 + 12984669826.

It is an arithmetic number, because the mean of its divisors is an integer number (12984669826).

Almost surely, 2^25969339651 is an apocalyptic number.

25969339651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25969339651 is an equidigital number, since it uses as much as digits as its factorization.

25969339651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11809800, while the sum is 58.

The spelling of 25969339651 in words is "twenty-five billion, nine hundred sixty-nine million, three hundred thirty-nine thousand, six hundred fifty-one".