250068509 has 2 divisors, whose sum is σ = 250068510. Its totient is φ = 250068508.

The previous prime is 250068503. The next prime is 250068547. The reversal of 250068509 is 905860052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135792409 + 114276100 = 11653^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 250068509 - 2⁴ = 250068493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250068503) 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, 125034254 + 125034255.

It is an arithmetic number, because the mean of its divisors is an integer number (125034255).

Almost surely, 2^250068509 is an apocalyptic number.

It is an amenable number.

250068509 is a deficient number, since it is larger than the sum of its proper divisors (1).

250068509 is an equidigital number, since it uses as much as digits as its factorization.

250068509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 250068509 is about 15813.5545972435. The cubic root of 250068509 is about 630.0180636460.

The spelling of 250068509 in words is "two hundred fifty million, sixty-eight thousand, five hundred nine".