Why September 27, 2025 is the 'coolest mathematical date of our lifetime'

September 27, 2025, is a special day mathematically speaking, due to a rare numerical trick.

The date's numerals, when written as 09/27/2025 and the forward slashes are eliminated, form the number 9,272,025.

This number is the square of 3,045, as Howie Hua, a math instructor at Fresno State University, explains:

3,045 times 3,045 is 9,272,025

, describing it as the

“coolest mathematical date of our lifetime”

Additionally, when the date is written with the day before the month, 27/09/2025, it still holds a unique numerical significance.

Author's summary: Special math date.

Popular Science — 2027-01-09