3902725 has 6 divisors (see below), whose sum is σ = 4839410. Its totient is φ = 3122160.

The previous prime is 3902713. The next prime is 3902747. The reversal of 3902725 is 5272093.

3902725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 454276 + 3448449 = 674^2 + 1857^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3902725 is a prime.

3902725 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3902693 and 3902702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78030 + ... + 78079.

Almost surely, 2^3902725 is an apocalyptic number.

It is an amenable number.

3902725 is a deficient number, since it is larger than the sum of its proper divisors (936685).

3902725 is a wasteful number, since it uses less digits than its factorization.

3902725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156119 (or 156114 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3902725 is about 1975.5315740327. The cubic root of 3902725 is about 157.4427439484.

The spelling of 3902725 in words is "three million, nine hundred two thousand, seven hundred twenty-five".