9125729 has 2 divisors, whose sum is σ = 9125730. Its totient is φ = 9125728.

The previous prime is 9125713. The next prime is 9125747. The reversal of 9125729 is 9275219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 5329 = 3020^2 + 73^2 .

It is an emirp because it is prime and its reverse (9275219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9125729 - 2⁴ = 9125713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9125029) 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, 4562864 + 4562865.

It is an arithmetic number, because the mean of its divisors is an integer number (4562865).

Almost surely, 2^9125729 is an apocalyptic number.

It is an amenable number.

9125729 is a deficient number, since it is larger than the sum of its proper divisors (1).

9125729 is an equidigital number, since it uses as much as digits as its factorization.

9125729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 9125729 is about 3020.8821559273. The cubic root of 9125729 is about 208.9725244896.

The spelling of 9125729 in words is "nine million, one hundred twenty-five thousand, seven hundred twenty-nine".