7210216625 has 8 divisors (see below), whose sum is σ = 8998350504. Its totient is φ = 5768173200.

The previous prime is 7210216589. The next prime is 7210216627. The reversal of 7210216625 is 5266120127.

It can be written as a sum of positive squares in 4 ways, for example, as 819333376 + 6390883249 = 28624^2 + 79943^2 .

It is not a de Polignac number, because 7210216625 - 2²⁰ = 7209168049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7210216591 and 7210216600.

It is not an unprimeable number, because it can be changed into a prime (7210216627) 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 in 7 ways as a sum of consecutive naturals, for example, 28840742 + ... + 28840991.

It is an arithmetic number, because the mean of its divisors is an integer number (1124793813).

Almost surely, 2^7210216625 is an apocalyptic number.

It is an amenable number.

7210216625 is a deficient number, since it is larger than the sum of its proper divisors (1788133879).

7210216625 is an equidigital number, since it uses as much as digits as its factorization.

7210216625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57681748 (or 57681738 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 7210216625 is about 84912.9944413692. The cubic root of 7210216625 is about 1931.8916748637.

The spelling of 7210216625 in words is "seven billion, two hundred ten million, two hundred sixteen thousand, six hundred twenty-five".