Australia is 278 times larger than Burundi.
Area: 7,741,220 km2 World Factbook
Population: 22,507,617 (July 2014) World Factbook
Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the world's sixth-largest country by total area. Wikipedia
Area: 27,830 km2 World Factbook
Population: 10,395,931 (July 2014) World Factbook
Burundi, officially the Republic of Burundi, is a landlocked country in the African Great Lakes region of Southeast Africa, bordered by Rwanda to the north, Tanzania to the east and south and the Democratic Republic of the Congo to the west. It is also sometimes considered part of Central Africa. Wikipedia