

Q: What are all the possible solutions to sum of consecutive positive integers that sum to 2025?
A: There are many solutions if we take out the word “longest”.
1 number 2025
2 numbers 1012 + 1013
3 numbers 674 + 675 + 676
5 numbers 403 + 404 + 405 + 406 + 407
6 numbers 335 + 336…+ 340
9 numbers 221 + 222 + …+ 299
10 numbers 198 + 199 + 200 + … +207
15 numbers 128 + 129 + … + 142
18 numbers 104 + 105 + … + 121
25 numbers 69 + 70 + …+ 93
27 numbers 62 + 63 + … + 98
30 numbers 53 + 54 + … + 81+ 82
45 numbers 22 + 23 + …67+ 68
54 numbers 11 + 12 + ….+ 63 + 64
Q: What is the longest sum of consecutive positive integers that sum to 2025?
A: The longest is 54 numbers from 11 til 64 (including 11 and 64).
If we add 11 and 64, we get 75.
The adjacent numbers to 11 and 64 that also add up to 75 like 12 and 63.
There are 27 pairs of numbers that add up to 75 — all those numbers sum to 2025.