2nd biggest. And also not how it works. You need a really big difference in economy size to buy out the other guy completely.Of course they can corrupt India. After all USA have the biggest economy in the world and they managed to corrupt their country very well from top to bottom.
25 trillion vs 11 trillion is not that great of a difference, it's proportionally similar to the difference between India and Germany. Just try and imagine India buying out all of the german political establishment through corruption. That would be impossible.