2563328281 has 2 divisors, whose sum is σ = 2563328282. Its totient is φ = 2563328280.

The previous prime is 2563328269. The next prime is 2563328309. The reversal of 2563328281 is 1828233652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2458573056 + 104755225 = 49584^2 + 10235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563328281 - 2¹⁷ = 2563197209 is a prime.

It is a super-3 number, since 3×2563328281³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2563328231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281664140 + 1281664141.

It is an arithmetic number, because the mean of its divisors is an integer number (1281664141).

Almost surely, 2^2563328281 is an apocalyptic number.

It is an amenable number.

2563328281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563328281 is an equidigital number, since it uses as much as digits as its factorization.

2563328281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The square root of 2563328281 is about 50629.3223438750. The cubic root of 2563328281 is about 1368.5733423209.

The spelling of 2563328281 in words is "two billion, five hundred sixty-three million, three hundred twenty-eight thousand, two hundred eighty-one".