What does address(0) mean in solidity?

[abn2357]

Anyone can give me a detailed explanation? When to use it and what its functions are.

[0xbigapple]

Address(0) is represented as 0x0000000000000000000000000000000000000000. This address is often used to signify a non-existent or uninitialized address.
Common Uses:
Default Value: It can be used as a default value for address variables.
Null Address: It often acts as a placeholder to indicate that an address has not been set or is invalid.
Burning Tokens: In token contracts, sending tokens to address(0) can be used to "burn" them, effectively removing them from circulation.