I guess Bitcoin will cross $25K by the end of January 2018.
Hell, at this rate we may even see $25K before the end of 2017. But even if we don't, I'd say we will definitely be past the $25K mark in January 2018, because it looks like the price will continue to rise.
i think when january started the price will be came over than that amount, people are still needs btc, and the price will still go up and higher.