3809925 has 72 divisors (see below), whose sum is σ = 8124480. Its totient is φ = 1670400.

The previous prime is 3809917. The next prime is 3809941. The reversal of 3809925 is 5299083.

It is not a de Polignac number, because 3809925 - 2³ = 3809917 is a prime.

3809925 is a lucky number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 3809925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 64546 + ... + 64604.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

Almost surely, 2^3809925 is an apocalyptic number.

3809925 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3809925 is an abundant number, since it is smaller than the sum of its proper divisors (4314555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3809925 is a wasteful number, since it uses less digits than its factorization.

3809925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 3809925 is about 1951.9029176678. The cubic root of 3809925 is about 156.1848154767.

The spelling of 3809925 in words is "three million, eight hundred nine thousand, nine hundred twenty-five".