250605317 has 2 divisors, whose sum is σ = 250605318. Its totient is φ = 250605316.

The previous prime is 250605287. The next prime is 250605319. The reversal of 250605317 is 713506052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198274561 + 52330756 = 14081^2 + 7234^2 .

It is a cyclic number.

It is not a de Polignac number, because 250605317 - 2¹⁶ = 250539781 is a prime.

Together with 250605319, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250605317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250605319) 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, 125302658 + 125302659.

It is an arithmetic number, because the mean of its divisors is an integer number (125302659).

Almost surely, 2^250605317 is an apocalyptic number.

It is an amenable number.

250605317 is a deficient number, since it is larger than the sum of its proper divisors (1).

250605317 is an equidigital number, since it uses as much as digits as its factorization.

250605317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 250605317 is about 15830.5185322528. The cubic root of 250605317 is about 630.4685495666.

The spelling of 250605317 in words is "two hundred fifty million, six hundred five thousand, three hundred seventeen".