7725676729 has 2 divisors, whose sum is σ = 7725676730. Its totient is φ = 7725676728.

The previous prime is 7725676727. The next prime is 7725676753. The reversal of 7725676729 is 9276765277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3884156329 + 3841520400 = 62323^2 + 61980^2 .

It is a cyclic number.

It is not a de Polignac number, because 7725676729 - 2¹ = 7725676727 is a prime.

Together with 7725676727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7725676723) 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, 3862838364 + 3862838365.

It is an arithmetic number, because the mean of its divisors is an integer number (3862838365).

Almost surely, 2^7725676729 is an apocalyptic number.

It is an amenable number.

7725676729 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725676729 is an equidigital number, since it uses as much as digits as its factorization.

7725676729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15558480, while the sum is 58.

The square root of 7725676729 is about 87895.8288487002. The cubic root of 7725676729 is about 1976.8733369040.

The spelling of 7725676729 in words is "seven billion, seven hundred twenty-five million, six hundred seventy-six thousand, seven hundred twenty-nine".