The list estimated the net worth of the world's richest people, excluding royalty and dictators, as of February 12, 2014.
Bill Gates, founder of Microsoft, added $9 billion to his fortune since 2013 and topped the 2014 billionaire list.
[2] Aliko Dangote of Nigeria became the first African ever to crack the top 25, with an estimated net worth of $25 billion.
24-year-old Perenna Kei, daughter of Chinese real estate developer Ji Haipeng, was the youngest person on the list.
[3] Among the largest gainers from the previous year's list was Facebook founder Mark Zuckerberg.
[2] A total of 1,645 people made the 2014 billionaire list, represented combined wealth of $6.4 trillion.