Whether and how language influences two-digit number processing is not yet clearly understood. Previous studies in languages such as English, Polish, German, or Czech have reported modulations of numerical effects, suggesting that number-word structure may shape how multi-digit numbers are processed. The present study investigated whether number-word activation contributes to Arabic multi-digit number processing in French and German. Sixty-four adults (32 French- and 32 German-speaking) performed a two-digit number magnitude comparison task manipulating unit–decade compatibility and number range (below vs. above 60). Results revealed robust Unit–Decade Compatibility Effects in both language groups, with no interaction, suggesting comparable processing across groups. However, within the French sample, reaction times were significantly faster for numbers above 60 than below 60, whereas German participants showed no such difference. We suggest that this pattern may be explained by characteristics of the French verbal number system: its composite forms (e.g., soixante-dix “sixty-ten”, quatre-vingts “four-twenties”) contain highly frequent number words that are often more practiced, potentially facilitating processing despite their structural irregularity.