0x1A45

0x1A45 is a hexadecimal numeral, commonly used in computing. The value is decimal 6725, and in binary it is 0001 1010 0100 0101.

In programming and digital electronics, the prefix 0x indicates base-16 notation. Hex literals like 0x1A45 appear in many languages, including C, C++, Java, and Python, and are often used to represent constants, bit masks, memory addresses, or other low-level values that map directly to hardware or binary data.

Because hexadecimal numbers are simply representations, 0x1A45 has no inherent meaning outside its context. It may serve as a product or device identifier in a specification, a register or flag value in firmware, a magic number in a file format, or a generic example value in documentation and tutorials.

In memory and data representation, endianness affects how a 16-bit value like 0x1A45 is stored. On little-endian systems it would be stored as the byte sequence 45 1A, while on big-endian systems it would be stored as 1A 45. When interpreting such values, the surrounding protocol or file format usually defines their intended meaning and usage.

See also: hexadecimal notation, decimal system, binary representation, endianness, magic numbers.