Bermuda is about 23,463 times smaller than Niger.

Niger is approximately 1,267,000 sq km, while Bermuda is approximately 54 sq km, making Bermuda 0.0% the size of Niger. Meanwhile, the population of Niger is ~24.5 million people (24.4 million fewer people live in Bermuda).
Tip: This to-scale comparison of Niger vs. Bermuda uses the Mercator projection, which distorts the size of regions near the poles.