3685225 has 6 divisors (see below), whose sum is σ = 4569710. Its totient is φ = 2948160.

The previous prime is 3685219. The next prime is 3685247. The reversal of 3685225 is 5225863.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 541696 + 3143529 = 736^2 + 1773^2 .

It is not a de Polignac number, because 3685225 - 2²¹ = 1588073 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁸ + 8 + 5² + 2¹⁴ + 2¹⁴ + 5⁹ .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73680 + ... + 73729.

Almost surely, 2^3685225 is an apocalyptic number.

It is an amenable number.

3685225 is a deficient number, since it is larger than the sum of its proper divisors (884485).

3685225 is a wasteful number, since it uses less digits than its factorization.

3685225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147419 (or 147414 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 3685225 is about 1919.6939860301. The cubic root of 3685225 is about 154.4618870320.

The spelling of 3685225 in words is "three million, six hundred eighty-five thousand, two hundred twenty-five".