Answer:
The possible number is 28.
Step-by-step explanation:
Since,
Factors of 19 = 1, 19,
Factors of 21 = 1, 3, 7, 21,
Factors of 23 = 1, 23,
Factors of 25 = 1, 5, 25
Now, numbers greater than 25 are,
26, 27, 28, 29, ......
Factors of 26 = 1, 2, 13, 26,
Factors of 27 = 1, 3, 9, 27,
Factors of 28 = 1, 2, 4, 7, 14, 28
Hence, a number greater than 25 that has more factors than the number 19, 21, 23 and 25 would be 28.