Alaska (USA) is 25,173 times larger than Manhattan (NYC borough).
Area: 1,477,953 km2 US Census
Population: 735,132 (July 2013) US Census
Alaska is a U.S. state situated in the northwest extremity of the North American continent. Wikipedia
Area: 59 km2 calculated
Population: 1,619,090 (2012)
Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia