7273225081 has 2 divisors, whose sum is σ = 7273225082. Its totient is φ = 7273225080.

The previous prime is 7273225051. The next prime is 7273225171. The reversal of 7273225081 is 1805223727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5860668025 + 1412557056 = 76555^2 + 37584^2 .

It is a cyclic number.

It is not a de Polignac number, because 7273225081 - 2⁷ = 7273224953 is a prime.

It is a super-2 number, since 2×7273225081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7273225081.

It is not a weakly prime, because it can be changed into another prime (7273225021) 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, 3636612540 + 3636612541.

It is an arithmetic number, because the mean of its divisors is an integer number (3636612541).

Almost surely, 2^7273225081 is an apocalyptic number.

It is an amenable number.

7273225081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7273225081 is an equidigital number, since it uses as much as digits as its factorization.

7273225081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 7273225081 is about 85283.2051520110. The cubic root of 7273225081 is about 1937.5028167618.

The spelling of 7273225081 in words is "seven billion, two hundred seventy-three million, two hundred twenty-five thousand, eighty-one".