7612125809 has 2 divisors, whose sum is σ = 7612125810. Its totient is φ = 7612125808.

The previous prime is 7612125803. The next prime is 7612125827. The reversal of 7612125809 is 9085212167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6017880625 + 1594245184 = 77575^2 + 39928^2 .

It is a cyclic number.

It is not a de Polignac number, because 7612125809 - 2²⁰ = 7611077233 is a prime.

It is not a weakly prime, because it can be changed into another prime (7612125803) 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, 3806062904 + 3806062905.

It is an arithmetic number, because the mean of its divisors is an integer number (3806062905).

Almost surely, 2^7612125809 is an apocalyptic number.

It is an amenable number.

7612125809 is a deficient number, since it is larger than the sum of its proper divisors (1).

7612125809 is an equidigital number, since it uses as much as digits as its factorization.

7612125809 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 7612125809 is about 87247.4974368893. The cubic root of 7612125809 is about 1967.1402250819.

The spelling of 7612125809 in words is "seven billion, six hundred twelve million, one hundred twenty-five thousand, eight hundred nine".