3781125 has 24 divisors (see below), whose sum is σ = 6818136. Its totient is φ = 2016000.

The previous prime is 3781121. The next prime is 3781147. The reversal of 3781125 is 5211873.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 3755844 = 159^2 + 1938^2 .

It is not a de Polignac number, because 3781125 - 2² = 3781121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (284089).

Almost surely, 2^3781125 is an apocalyptic number.

It is an amenable number.

3781125 is a deficient number, since it is larger than the sum of its proper divisors (3037011).

3781125 is a wasteful number, since it uses less digits than its factorization.

3781125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 3369 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 3781125 is about 1944.5115067800. The cubic root of 3781125 is about 155.7902753742.

Adding to 3781125 its reverse (5211873), we get a palindrome (8992998).

The spelling of 3781125 in words is "three million, seven hundred eighty-one thousand, one hundred twenty-five".