There are a few different sizes of the Airstream Globetrotter but the dry weight of the 25 foot long Airstream Globetrotter travel trailer is 6,074 lbs which includes the LP tanks and batteries.
That does not include anything else such as water or black or grey water in the waste tanks which adds to the weight and also any of your luggage or supplies.
The Airstream Globetrotter is a nice travel trailer but is a bit heavier in weight than some other Airstream models and needs a good size pickup truck to pull it safely.
I would recommend using a 3/4 ton pickup or even better a 1 ton pickup truck to safely pull the 25 Foot Airstream Globetrotter Travel Trailer.