3905838925 has 6 divisors (see below), whose sum is σ = 4843240298. Its totient is φ = 3124671120.

The previous prime is 3905838887. The next prime is 3905838943. The reversal of 3905838925 is 5298385093.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 569967876 + 3335871049 = 23874^2 + 57757^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3905838925 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 (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78116754 + ... + 78116803.

Almost surely, 2^3905838925 is an apocalyptic number.

It is an amenable number.

3905838925 is a deficient number, since it is larger than the sum of its proper divisors (937401373).

3905838925 is a wasteful number, since it uses less digits than its factorization.

3905838925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156233567 (or 156233562 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The square root of 3905838925 is about 62496.7113134763. The cubic root of 3905838925 is about 1574.8460654124.

The spelling of 3905838925 in words is "three billion, nine hundred five million, eight hundred thirty-eight thousand, nine hundred twenty-five".