2585198089 has 2 divisors, whose sum is σ = 2585198090. Its totient is φ = 2585198088.

The previous prime is 2585198059. The next prime is 2585198173. The reversal of 2585198089 is 9808915852.

It is a happy number.

2585198089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2516025600 + 69172489 = 50160^2 + 8317^2 .

It is a cyclic number.

It is not a de Polignac number, because 2585198089 - 2⁷ = 2585197961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2585198009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292599044 + 1292599045.

It is an arithmetic number, because the mean of its divisors is an integer number (1292599045).

Almost surely, 2^2585198089 is an apocalyptic number.

It is an amenable number.

2585198089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585198089 is an equidigital number, since it uses as much as digits as its factorization.

2585198089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 55.

The square root of 2585198089 is about 50844.8432881841. The cubic root of 2585198089 is about 1372.4544575428.

The spelling of 2585198089 in words is "two billion, five hundred eighty-five million, one hundred ninety-eight thousand, eighty-nine".