25259840659 has 2 divisors, whose sum is σ = 25259840660. Its totient is φ = 25259840658.

The previous prime is 25259840657. The next prime is 25259840707. The reversal of 25259840659 is 95604895252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25259840659 - 2¹ = 25259840657 is a prime.

Together with 25259840657, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25259840657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12629920329 + 12629920330.

It is an arithmetic number, because the mean of its divisors is an integer number (12629920330).

Almost surely, 2^25259840659 is an apocalyptic number.

25259840659 is a deficient number, since it is larger than the sum of its proper divisors (1).

25259840659 is an equidigital number, since it uses as much as digits as its factorization.

25259840659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 25259840659 in words is "twenty-five billion, two hundred fifty-nine million, eight hundred forty thousand, six hundred fifty-nine".