2505655289 has 2 divisors, whose sum is σ = 2505655290. Its totient is φ = 2505655288.

The previous prime is 2505655253. The next prime is 2505655357. The reversal of 2505655289 is 9825565052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433744889 + 71910400 = 49333^2 + 8480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505655289 - 2¹⁶ = 2505589753 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505655589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252827644 + 1252827645.

It is an arithmetic number, because the mean of its divisors is an integer number (1252827645).

Almost surely, 2^2505655289 is an apocalyptic number.

It is an amenable number.

2505655289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505655289 is an equidigital number, since it uses as much as digits as its factorization.

2505655289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 47.

The square root of 2505655289 is about 50056.5209438291. The cubic root of 2505655289 is about 1358.2314253312.

The spelling of 2505655289 in words is "two billion, five hundred five million, six hundred fifty-five thousand, two hundred eighty-nine".