25913398963 has 2 divisors, whose sum is σ = 25913398964. Its totient is φ = 25913398962.

The previous prime is 25913398939. The next prime is 25913398967. The reversal of 25913398963 is 36989331952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25913398963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25913398898 and 25913398907.

It is not a weakly prime, because it can be changed into another prime (25913398967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956699481 + 12956699482.

It is an arithmetic number, because the mean of its divisors is an integer number (12956699482).

Almost surely, 2^25913398963 is an apocalyptic number.

25913398963 is a deficient number, since it is larger than the sum of its proper divisors (1).

25913398963 is an equidigital number, since it uses as much as digits as its factorization.

25913398963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 58.

The spelling of 25913398963 in words is "twenty-five billion, nine hundred thirteen million, three hundred ninety-eight thousand, nine hundred sixty-three".