Tokyo's benchmark stock index closed at a quarter-century high on Tuesday, rising by 1.73 percent amid eased concerns over geopolitical risks and on expectations for sound corporate earnings.

The Nikkei 225 gained 389.25 points to close at 22,937.60, the highest level since January 1992.

The broader Topix index advanced 1.15 percent, or 20.63 points, to 1,813.29