25449947759 has 2 divisors, whose sum is σ = 25449947760. Its totient is φ = 25449947758.

The previous prime is 25449947701. The next prime is 25449947827. The reversal of 25449947759 is 95774994452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25449947759 - 2¹² = 25449943663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25449947695 and 25449947704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25449947659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12724973879 + 12724973880.

It is an arithmetic number, because the mean of its divisors is an integer number (12724973880).

Almost surely, 2^25449947759 is an apocalyptic number.

25449947759 is a deficient number, since it is larger than the sum of its proper divisors (1).

25449947759 is an equidigital number, since it uses as much as digits as its factorization.

25449947759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114307200, while the sum is 65.

The spelling of 25449947759 in words is "twenty-five billion, four hundred forty-nine million, nine hundred forty-seven thousand, seven hundred fifty-nine".