25914457757 has 2 divisors, whose sum is σ = 25914457758. Its totient is φ = 25914457756.

The previous prime is 25914457747. The next prime is 25914457831. The reversal of 25914457757 is 75775441952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25363429081 + 551028676 = 159259^2 + 23474^2 .

It is a cyclic number.

It is not a de Polignac number, because 25914457757 - 2⁶ = 25914457693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25914457747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12957228878 + 12957228879.

It is an arithmetic number, because the mean of its divisors is an integer number (12957228879).

Almost surely, 2^25914457757 is an apocalyptic number.

It is an amenable number.

25914457757 is a deficient number, since it is larger than the sum of its proper divisors (1).

25914457757 is an equidigital number, since it uses as much as digits as its factorization.

25914457757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348000, while the sum is 56.

The spelling of 25914457757 in words is "twenty-five billion, nine hundred fourteen million, four hundred fifty-seven thousand, seven hundred fifty-seven".