Arizona (USA) is 100% larger than Nepal.
Area: 147,181 km2 World Factbook
Population: 30,986,975 (July 2014) World Factbook
Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked sovereign nation located in South Asia. With an area of 147,181 square kilometres and a population of approximately 27 million, Nepal is the world's 93rd largest country by land mass and the 41st most populous country. Wikipedia
Arizona is a state in the southwestern region of the United States. It is also part of the Western United States and of the Mountain West states. It is the sixth largest and the 15th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is one of the Four Corners states. Wikipedia