25426527689 has 2 divisors, whose sum is σ = 25426527690. Its totient is φ = 25426527688.

The previous prime is 25426527677. The next prime is 25426527743. The reversal of 25426527689 is 98672562452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14857659664 + 10568868025 = 121892^2 + 102805^2 .

It is a cyclic number.

It is not a de Polignac number, because 25426527689 - 2⁸ = 25426527433 is a prime.

It is not a weakly prime, because it can be changed into another prime (25426527619) 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, 12713263844 + 12713263845.

It is an arithmetic number, because the mean of its divisors is an integer number (12713263845).

Almost surely, 2^25426527689 is an apocalyptic number.

It is an amenable number.

25426527689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25426527689 is an equidigital number, since it uses as much as digits as its factorization.

25426527689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 56.

The spelling of 25426527689 in words is "twenty-five billion, four hundred twenty-six million, five hundred twenty-seven thousand, six hundred eighty-nine".