25 - the entrant number of the first winner of the Women's Royal Rumble Match

Everyone remembers the first winner of the men's Royal Rumble Match in 1988 ("Hacksaw" Jim Duggan), and some even remember which number he entered the match (13). Asuka will forever be remembered in pro wrestling history as the first person to win the women's Royal Rumble match, and she did it after entering the Rumble at #25.
On her way to victory, Asuka threw out three other women, including Nikki Bella last to seal the win. Many expect she'll challenge the winner of the first-ever women's Elimination Chamber Match at WrestleMania.
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
For comparison's sake, only one man has won the Royal Rumble Match from the 25th entry, and it was Hulk Hogan in 1990.