6484025081 has 2 divisors, whose sum is σ = 6484025082. Its totient is φ = 6484025080.

The previous prime is 6484025071. The next prime is 6484025099. The reversal of 6484025081 is 1805204846.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4279253056 + 2204772025 = 65416^2 + 46955^2 .

It is a cyclic number.

It is not a de Polignac number, because 6484025081 - 2⁶ = 6484025017 is a prime.

It is a super-2 number, since 2×6484025081² = 84085162502074113122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6484025021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242012540 + 3242012541.

It is an arithmetic number, because the mean of its divisors is an integer number (3242012541).

Almost surely, 2^6484025081 is an apocalyptic number.

It is an amenable number.

6484025081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6484025081 is an equidigital number, since it uses as much as digits as its factorization.

6484025081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 6484025081 is about 80523.4442941930. Note that the first 3 decimals coincide. The cubic root of 6484025081 is about 1864.7254379504.

The spelling of 6484025081 in words is "six billion, four hundred eighty-four million, twenty-five thousand, eighty-one".