19404025

19404025 is an eight-digit decimal integer. In mathematics, the number is notable for being a perfect square: 19404025 = 4405^2.

Its prime factorization is 5^2 × 881^2, with 881 being a prime number. Therefore 19404025 = (5 × 881)^2, emphasizing its status as a square of an integer.

The positive divisors of 19404025, derived from its factorization, are 1, 5, 25, 881, 4,405, 22,025, 776,161, 3,880,805, and 19,404,025. The last two digits are 25, indicating divisibility by 25, and the sum of its digits is 25, so the number is not divisible by 3. It is not even, and thus not divisible by 2.

In practical contexts, eight-digit numbers such as 19404025 are commonly used as serial numbers, product codes, or database keys in various industries. There is no widely known historical event, dataset, or public label that is specifically identified with this exact number. Related factors to note include 441 and 881, with 881 forming the prime component of the square root.