25810671589 has 2 divisors, whose sum is σ = 25810671590. Its totient is φ = 25810671588.

The previous prime is 25810671587. The next prime is 25810671659. The reversal of 25810671589 is 98517601852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14090877025 + 11719794564 = 118705^2 + 108258^2 .

It is a cyclic number.

It is not a de Polignac number, because 25810671589 - 2¹ = 25810671587 is a prime.

Together with 25810671587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25810671587) 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, 12905335794 + 12905335795.

It is an arithmetic number, because the mean of its divisors is an integer number (12905335795).

Almost surely, 2^25810671589 is an apocalyptic number.

It is an amenable number.

25810671589 is a deficient number, since it is larger than the sum of its proper divisors (1).

25810671589 is an equidigital number, since it uses as much as digits as its factorization.

25810671589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 25810671589 in words is "twenty-five billion, eight hundred ten million, six hundred seventy-one thousand, five hundred eighty-nine".