KoG, Vol. 29 No. 29, 2025.
Professional paper
https://doi.org/10.31896/k.29.8
On Remarkable Properties of Number 2025
Iva Kodrnja
; Faculty of Geodesy, University of Zagreb, Zagreb, Croatia
*
* Corresponding author.
Abstract
In this paper we investigate the number 2025 and visualize its regularity. This is a perfect square, but a deeper look reveals much more structure related to counting lattice points in polygons and polyhedra. We will also discuss the frequency of square and regular years and the uniqueness of such a regular year number.
Keywords
figure numbers; trigonal numbers; tetrahedral numbers
Hrčak ID:
341895
URI
Publication date:
19.12.2025.
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