Eggs are shipped from a poultry farm in trucks. The eggs are packed in cartons of one dozen eggs each; cartons are placed in crates that hold 20 cartons each. The crates are stacked in the trucks, 5 crates across, 25 crates deep and 25 crates high. How many eggs are in 5 truckloads?

To find the number of eggs in 5 truckloads, we first need to calculate the number of crates in 5 truckloads. Since each truck holds 5 crates across, 25 crates deep, and 25 crates high, the total number of crates in one truck is:

5 crates per truck * 25 crates deep * 25 crates high = 3125 crates per truck
To calculate the total number of crates in 5 truckloads, we multiply the number of crates in one truck by 5:
3125 crates per truck * 5 trucks = 15625 crates
Since each crate holds 20 cartons, and each carton holds a dozen eggs (12 eggs), the number of eggs in one crate is:
20 cartons per crate * 12 eggs per carton = 240 eggs per crate
Finally, the total number of eggs in 5 truckloads can be calculated by multiplying the number of crates by the number of eggs in one crate:
15625 crates * 240 eggs per crate = 3,750,000 eggs. Answer: \boxed{3,750,000}.