2545765289 has 2 divisors, whose sum is σ = 2545765290. Its totient is φ = 2545765288.

The previous prime is 2545765253. The next prime is 2545765309. The reversal of 2545765289 is 9825675452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1378859689 + 1166905600 = 37133^2 + 34160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545765289 - 2¹⁶ = 2545699753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2545765289.

It is not a weakly prime, because it can be changed into another prime (2545765489) 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, 1272882644 + 1272882645.

It is an arithmetic number, because the mean of its divisors is an integer number (1272882645).

Almost surely, 2^2545765289 is an apocalyptic number.

It is an amenable number.

2545765289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545765289 is an equidigital number, since it uses as much as digits as its factorization.

2545765289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048000, while the sum is 53.

The square root of 2545765289 is about 50455.5773824857. The cubic root of 2545765289 is about 1365.4405210042.

The spelling of 2545765289 in words is "two billion, five hundred forty-five million, seven hundred sixty-five thousand, two hundred eighty-nine".