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Editorial Challans
Published on
Jan 5, 2025 at 4:20 p.m.
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“Incredible” is the term used by Jérôme Cottanceau to describe 2025. The mathematics teacher at the Truffaut high school in Montaigu-Vendée detailed in his blog Choux Rom & co. the reasons why next year is exceptional.
Perfect square and refactorable number
From a mathematical point of view, the number 2025 has many specificities. First of all, it is a perfect square. If we multiply 45 by itself, we get 2025.
Perfect squares have many mathematical properties.
Another specificity of the year 2025: it is a concentric octagonal number as well as an odd refactorable number.
Several calculations also make it possible to arrive at the number 2025, in particular the Nicomachean theorem. It is explained in a video made by Jérôme Cottanceau on his Youtube channel called El Jj.
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