What is a valid ERC20 address?

Could you please elaborate on what constitutes a valid ERC20 address? I'm particularly interested in understanding the characteristics that define its validity. Does it follow a specific format or structure? Are there any specific requirements or standards that need to be met for an address to be considered valid? Additionally, how can I verify the validity of an ERC20 address? Is there a tool or method that I can use to check its authenticity? I'm keen on ensuring that I'm sending transactions to the correct address and avoiding any potential errors or losses. Thank you for your assistance in clarifying this matter.