Solution: 1 There are two kinds of numbers divisible by 25. When the last two digits are 50, the total is A55= 120. When the last two digits are 25, four methods rank first, the other four digits are A44, and * * * has 4×A44=96, so the number divisible by 25 is 65438+.

2. The first four digits of any confirmation, such as the last three digits of 6543, are 210; Normally, there are A33 sorts in the last three digits, but only one of these A33 sorts meets the condition of X.