With 24,000 mAh, this power bank can charge a typical smartphone multiple times before it needs to be recharged itself. For example, something with a ~4,000-5,000 mAh battery might get ~4-5 full charges (depending on losses / inefficiency).
22.5 W PD means it can charge devices faster than older slow chargers. For most phones, this will reduce charging time significantly. It also means the bank can likely charge devices that support PD fast charging (smartphones, possibly some small tablets).
Because it's “long-lasting,” it likely is built with higher quality cells and possibly multiple output ports. It might also have protections (overcharge, overheat, etc.), although I couldn’t find detailed safety specs in that source.