3778825 has 6 divisors (see below), whose sum is σ = 4685774. Its totient is φ = 3023040.

The previous prime is 3778823. The next prime is 3778837. The reversal of 3778825 is 5288773.

It can be written as a sum of positive squares in 3 ways, for example, as 440896 + 3337929 = 664^2 + 1827^2 .

It is not a de Polignac number, because 3778825 - 2¹ = 3778823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3778823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75552 + ... + 75601.

Almost surely, 2^3778825 is an apocalyptic number.

It is an amenable number.

3778825 is a deficient number, since it is larger than the sum of its proper divisors (906949).

3778825 is a wasteful number, since it uses less digits than its factorization.

3778825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151163 (or 151158 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 3778825 is about 1943.9200086423. The cubic root of 3778825 is about 155.7586806935.

The spelling of 3778825 in words is "three million, seven hundred seventy-eight thousand, eight hundred twenty-five".