2560020181 has 2 divisors, whose sum is σ = 2560020182. Its totient is φ = 2560020180.

The previous prime is 2560020173. The next prime is 2560020227. The reversal of 2560020181 is 1810200652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2236344100 + 323676081 = 47290^2 + 17991^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560020181 - 2³ = 2560020173 is a prime.

It is a super-3 number, since 3×2560020181³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560020131) 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, 1280010090 + 1280010091.

It is an arithmetic number, because the mean of its divisors is an integer number (1280010091).

Almost surely, 2^2560020181 is an apocalyptic number.

It is an amenable number.

2560020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560020181 is an equidigital number, since it uses as much as digits as its factorization.

2560020181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 2560020181 is about 50596.6419933181. The cubic root of 2560020181 is about 1367.9843520220.

The spelling of 2560020181 in words is "two billion, five hundred sixty million, twenty thousand, one hundred eighty-one".