Country size comparison
compared to
Niger is about 46 times bigger than Burundi.
Burundi is approximately 27,830 sq km, while Niger is approximately 1,267,000 sq km, making Niger 4,453% larger than Burundi. Meanwhile, the population of Burundi is ~12.7 million people (11.8 million more people live in Niger).
Compare further: Niger vs. Burundi