Theorem 25nn0

Description: 25 is a nonnegative integer. (Contributed by Umit Teoman Dogan, 10-Jun-2026)

	Ref	Expression
Assertion	25nn0	$$⊢25\in {\mathbb{N}}_0$$

Proof

Step	Hyp	Ref	Expression
1		2nn0	$$⊢2\in {\mathbb{N}}_0$$
2		5nn0	$$⊢5\in {\mathbb{N}}_0$$
3	1 2	deccl	$$⊢25\in {\mathbb{N}}_0$$