7125210689 has 2 divisors, whose sum is σ = 7125210690. Its totient is φ = 7125210688.

The previous prime is 7125210649. The next prime is 7125210737. The reversal of 7125210689 is 9860125217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6733843600 + 391367089 = 82060^2 + 19783^2 .

It is a cyclic number.

It is not a de Polignac number, because 7125210689 - 2²⁰ = 7124162113 is a prime.

It is not a weakly prime, because it can be changed into another prime (7125210649) 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, 3562605344 + 3562605345.

It is an arithmetic number, because the mean of its divisors is an integer number (3562605345).

Almost surely, 2^7125210689 is an apocalyptic number.

It is an amenable number.

7125210689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7125210689 is an equidigital number, since it uses as much as digits as its factorization.

7125210689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 7125210689 is about 84410.9630853718. The cubic root of 7125210689 is about 1924.2695323954.

The spelling of 7125210689 in words is "seven billion, one hundred twenty-five million, two hundred ten thousand, six hundred eighty-nine".