AFAIK the 2500 cannot do P25
trunking even though it has an option for P25 decoding - which is for conventional channels only.
You would need to get external software to do the rest of the trunking functions. With a dedicated scanner - Uniden or RS - that's not necessary, although a lot of folks use software (and if you get the right one, and are a premium subscriber, get the data directly from RR, or someone sends a prepared file) to do the programming.
Save your money and buy a quality HF portable or desktop, and invest in one of the
digital trunktrackers, if your area uses that format. Otherwise, an
analog trunktracker will do the job. These wideband receivers are nice, but oftentimes compromise performance in one area or the other (in this case, the HF section of the 2500 - it's not nearly as selective as it could be....) as a cost saving measure.
73s Mike