2605336081 has 2 divisors, whose sum is σ = 2605336082. Its totient is φ = 2605336080.

The previous prime is 2605336061. The next prime is 2605336117. The reversal of 2605336081 is 1806335062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1455041025 + 1150295056 = 38145^2 + 33916^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605336081 - 2¹⁹ = 2604811793 is a prime.

It is a super-2 number, since 2×2605336081² = 13575552189920877122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2605336061) 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, 1302668040 + 1302668041.

It is an arithmetic number, because the mean of its divisors is an integer number (1302668041).

Almost surely, 2^2605336081 is an apocalyptic number.

It is an amenable number.

2605336081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605336081 is an equidigital number, since it uses as much as digits as its factorization.

2605336081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2605336081 is about 51042.4928956257. The cubic root of 2605336081 is about 1376.0089266775.

The spelling of 2605336081 in words is "two billion, six hundred five million, three hundred thirty-six thousand, eighty-one".