3825641 has 4 divisors (see below), whose sum is σ = 3843984. Its totient is φ = 3807300.

The previous prime is 3825637. The next prime is 3825643. The reversal of 3825641 is 1465283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1465283 = 29 ⋅50527.

It is a cyclic number.

It is not a de Polignac number, because 3825641 - 2² = 3825637 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3825643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8855 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (960996).

Almost surely, 2^3825641 is an apocalyptic number.

It is an amenable number.

3825641 is a deficient number, since it is larger than the sum of its proper divisors (18343).

3825641 is a wasteful number, since it uses less digits than its factorization.

3825641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18342.

The product of its digits is 5760, while the sum is 29.

The square root of 3825641 is about 1955.9245895484. The cubic root of 3825641 is about 156.3992757950.

The spelling of 3825641 in words is "three million, eight hundred twenty-five thousand, six hundred forty-one".