You really think Google's index is only 25b pages long? Really? Good for a laugh but truthfully, searching for http in Google in no way gives you a total of Google's index. Its the pages with the word 'http' in the body.
Shows how little you people know about how Google and search works. The http part of the URI is NOT indexed in Google. So if you Google for http, you will get links related to the TOPIC http and NOT all links indexed by Google.