3825985 has 8 divisors (see below), whose sum is σ = 4715496. Its totient is φ = 2977920.

The previous prime is 3825979. The next prime is 3826001. The reversal of 3825985 is 5895283.

It can be written as a sum of positive squares in 4 ways, for example, as 355216 + 3470769 = 596^2 + 1863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3825985 - 2⁵ = 3825953 is a prime.

It is a super-2 number, since 2×3825985² = 29276322440450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10156 + ... + 10525.

It is an arithmetic number, because the mean of its divisors is an integer number (589437).

Almost surely, 2^3825985 is an apocalyptic number.

It is an amenable number.

3825985 is a deficient number, since it is larger than the sum of its proper divisors (889511).

3825985 is a wasteful number, since it uses less digits than its factorization.

3825985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20723.

The product of its digits is 86400, while the sum is 40.

The square root of 3825985 is about 1956.0125255223. The cubic root of 3825985 is about 156.4039634398.

The spelling of 3825985 in words is "three million, eight hundred twenty-five thousand, nine hundred eighty-five".