ETH to 25k by 2020 seems quite absurd at this point. Even BTC hasn't reached that price and it is far superior with a far lower supply. I will be selling a large portion of my ETH if it reaches $1500.
I also think like that and it is impossible for eth to reach 25k, because almost the average project based on ethereum platform has failed this year and interest in ico has also continued to decrease. Therefore it is very difficult for ethereum to rise and even reach 25k.