There are only about 200,000 words in the Russian language. This number has doubled since the 19th century, when only 50,000-100,000 words were recorded in dictionaries. This number is very small compared to the English language, which is comprised of over 1,000,000 words. Russians actually use very few of these words, and you will find that due to this many words have more than one meaning.

Russian is considered to the the international language of space, and in the event of an emergency instructions are given to astronauts in Russian. Russian is the most widespread language over Eurasia. Out of all European native languages it is the largest, and it is the most spoken out of all Slavic languages by a long shot. Overall, it is the 7th most spoken language in the world.

Source: http://lidenz.ru/5-interesting-facts-russian-people-speak/