2566522193 has 2 divisors, whose sum is σ = 2566522194. Its totient is φ = 2566522192.

The previous prime is 2566522187. The next prime is 2566522219. The reversal of 2566522193 is 3912256652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1443468049 + 1123054144 = 37993^2 + 33512^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566522193 - 2¹⁶ = 2566456657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2566522193.

It is not a weakly prime, because it can be changed into another prime (2566522093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283261096 + 1283261097.

It is an arithmetic number, because the mean of its divisors is an integer number (1283261097).

Almost surely, 2^2566522193 is an apocalyptic number.

It is an amenable number.

2566522193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566522193 is an equidigital number, since it uses as much as digits as its factorization.

2566522193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The square root of 2566522193 is about 50660.8546414290. The cubic root of 2566522193 is about 1369.1415214134.

The spelling of 2566522193 in words is "two billion, five hundred sixty-six million, five hundred twenty-two thousand, one hundred ninety-three".