2. A four-digit number is a multiple of 25, the sum of its digits is 25, this four-digit number is
【Answer】9925, 4975, 5875, 6775, 7675, 8575, 9475
【Analysis】Divisibility + Case Analysis
Last two digits 00: Does not exist;
Last two digits 25: 9925, 1 case;
Last two digits 50: Does not exist;
Last two digits 75: $4975,5875,6775,7675,8575,9475$, a total of 6 cases;