650125709 has 2 divisors, whose sum is σ = 650125710. Its totient is φ = 650125708.

The previous prime is 650125703. The next prime is 650125753. The reversal of 650125709 is 907521056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622352809 + 27772900 = 24947^2 + 5270^2 .

It is a cyclic number.

It is not a de Polignac number, because 650125709 - 2²⁰ = 649077133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650125703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325062854 + 325062855.

It is an arithmetic number, because the mean of its divisors is an integer number (325062855).

Almost surely, 2^650125709 is an apocalyptic number.

It is an amenable number.

650125709 is a deficient number, since it is larger than the sum of its proper divisors (1).

650125709 is an equidigital number, since it uses as much as digits as its factorization.

650125709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 650125709 is about 25497.5628050996. The cubic root of 650125709 is about 866.2949448447.

The spelling of 650125709 in words is "six hundred fifty million, one hundred twenty-five thousand, seven hundred nine".