3811825 has 12 divisors (see below), whose sum is σ = 5005260. Its totient is φ = 2869760.

The previous prime is 3811817. The next prime is 3811877. The reversal of 3811825 is 5281183.

It can be written as a sum of positive squares in 6 ways, for example, as 1521 + 3810304 = 39^2 + 1952^2 .

It is not a de Polignac number, because 3811825 - 2³ = 3811817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3811793 and 3811802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4060 + ... + 4909.

It is an arithmetic number, because the mean of its divisors is an integer number (417105).

Almost surely, 2^3811825 is an apocalyptic number.

It is an amenable number.

3811825 is a deficient number, since it is larger than the sum of its proper divisors (1193435).

3811825 is a wasteful number, since it uses less digits than its factorization.

3811825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8996 (or 8991 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 3811825 is about 1952.3895615373. The cubic root of 3811825 is about 156.2107741534.

The spelling of 3811825 in words is "three million, eight hundred eleven thousand, eight hundred twenty-five".