25862489089 has 2 divisors, whose sum is σ = 25862489090. Its totient is φ = 25862489088.

The previous prime is 25862489087. The next prime is 25862489099. The reversal of 25862489089 is 98098426852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14088503025 + 11773986064 = 118695^2 + 108508^2 .

It is a cyclic number.

It is not a de Polignac number, because 25862489089 - 2¹ = 25862489087 is a prime.

Together with 25862489087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25862489083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931244544 + 12931244545.

It is an arithmetic number, because the mean of its divisors is an integer number (12931244545).

Almost surely, 2^25862489089 is an apocalyptic number.

It is an amenable number.

25862489089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25862489089 is an equidigital number, since it uses as much as digits as its factorization.

25862489089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 25862489089 in words is "twenty-five billion, eight hundred sixty-two million, four hundred eighty-nine thousand, eighty-nine".