2565289 has 2 divisors, whose sum is σ = 2565290. Its totient is φ = 2565288.

The previous prime is 2565263. The next prime is 2565319. The reversal of 2565289 is 9825652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 1172889 = 1180^2 + 1083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565289 - 2⁵ = 2565257 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 5² + 6 + 5⁸ + 2¹⁴ + 8⁷ + 9⁵ .

It is not a weakly prime, because it can be changed into another prime (2565239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282644 + 1282645.

It is an arithmetic number, because the mean of its divisors is an integer number (1282645).

2^2565289 is an apocalyptic number.

It is an amenable number.

2565289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565289 is an equidigital number, since it uses as much as digits as its factorization.

2565289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 2565289 is about 1601.6519596966. The cubic root of 2565289 is about 136.8922199167.

The spelling of 2565289 in words is "two million, five hundred sixty-five thousand, two hundred eighty-nine".