3778925 has 6 divisors (see below), whose sum is σ = 4685898. Its totient is φ = 3023120.

The previous prime is 3778909. The next prime is 3778939. The reversal of 3778925 is 5298773.

It can be written as a sum of positive squares in 3 ways, for example, as 42436 + 3736489 = 206^2 + 1933^2 .

It is not a de Polignac number, because 3778925 - 2⁴ = 3778909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75554 + ... + 75603.

It is an arithmetic number, because the mean of its divisors is an integer number (780983).

Almost surely, 2^3778925 is an apocalyptic number.

It is an amenable number.

3778925 is a deficient number, since it is larger than the sum of its proper divisors (906973).

3778925 is a wasteful number, since it uses less digits than its factorization.

3778925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151167 (or 151162 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 3778925 is about 1943.9457296951. The cubic root of 3778925 is about 155.7600546418.

The spelling of 3778925 in words is "three million, seven hundred seventy-eight thousand, nine hundred twenty-five".