The "Twenty Dollar Bill" is a denomination of United States currency, worth twenty dollars. It features a portrait of Andrew Jackson, the seventh President of the United States, on the front. The bill is primarily green and has various security features, including a security thread and a watermark, to prevent counterfeiting. The back of the bill showcases the White House, the official residence of the President. The twenty-dollar bill is commonly used in everyday transactions and is one of the most circulated bills in the U.S. currency system, making it an essential part of American commerce.