At 1,200 mph, it would take about 20,833 hours and 20 minutes OR about 2.4 years to travel 25 million miles.
Six hours.
If I can travel 450 miles in 2 hours, I can travel 450 ÷ 2 = 225 miles in 1 hour. As I can travel 225 miles in each hour, I can travel 1200 miles in: 1200 ÷ 225 = 51/3 hours = 5 hours 20 minutes.
2 days
That depends at what speed you are travelling.
Ten seconds.
1200
The trip would take 37.5 days if you maintained that speed over the whole distance.
assuming walking speed = 100 meter/minute 1200 meters take 1200/100 = 12 minutes
Since PGC 169337 is a spiral galaxy 1200 million light years from us, it will take 1200 million years for the message to reach its intended designation (and an additional 1200 million years for any reply from an alien civilization).
Sunlight takes 8.4 minutes to travel 93 million miles to Earth. It would take us that long to reach the Sun at light speed.
It would take 10 seconds.
That cannot be calculated without knowing the average speed over that distance.