3775

3775 is a natural number that sits between 3774 and 3776. It is an odd composite number with prime factorization 5^2 × 151, so its divisors are 1, 5, 25, 151, 755, and 3775.

In decimal notation, 3775 is formed by the digits 3, 7, 7, and 5. The digit sum is 22, giving a digital root of 4. The number is divisible by 5 and by 25 but not by 3 or 9. In other bases, 3775 equals 111010111111 in binary and 0xEBF in hexadecimal.

151, one of the prime factors, is itself a prime number and is the 36th prime in the sequence of primes. Therefore, 3775 = 25 × 151, combining a square of 5 with a prime.

As a property summary, 3775 is odd and composite, not a Fibonacci or triangular number, and it is the product of a square and a prime. It serves as a representative example of a number that is a multiple of 25 but not divisible by 2 or any other small even factor.

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