475

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Number

$475$ (four hundred and seventy-five) is:

$5^2 \times 19$

The $21$st integer after $7$, $13$, $19$, $35$, $38$, $\ldots$, $223$, $253$, $285$, $305$, $350$, $380$, $410$ the decimal representation of whose square can be split into two parts which are each themselves square:

$475^2 = 225 \, 625$; $225 = 15^2$, $625 = 25^2$

Also see

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