3821825 has 12 divisors (see below), whose sum is σ = 5416320. Its totient is φ = 2620560.

The previous prime is 3821819. The next prime is 3821827. The reversal of 3821825 is 5281283.

It is not a de Polignac number, because 3821825 - 2⁴ = 3821809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3821827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10745 + ... + 11094.

It is an arithmetic number, because the mean of its divisors is an integer number (451360).

Almost surely, 2^3821825 is an apocalyptic number.

3821825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3821825 is a deficient number, since it is larger than the sum of its proper divisors (1594495).

3821825 is a wasteful number, since it uses less digits than its factorization.

3821825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21856 (or 21851 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 3821825 is about 1954.9488484357. The cubic root of 3821825 is about 156.3472567839.

The spelling of 3821825 in words is "three million, eight hundred twenty-one thousand, eight hundred twenty-five".