3929257525 has 6 divisors (see below), whose sum is σ = 4872279362. Its totient is φ = 3143406000.

The previous prime is 3929257499. The next prime is 3929257543. The reversal of 3929257525 is 5257529293.

It can be written as a sum of positive squares in 3 ways, for example, as 738589329 + 3190668196 = 27177^2 + 56486^2 .

It is not a de Polignac number, because 3929257525 - 2²⁷ = 3795039797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78585126 + ... + 78585175.

Almost surely, 2^3929257525 is an apocalyptic number.

It is an amenable number.

3929257525 is a deficient number, since it is larger than the sum of its proper divisors (943021837).

3929257525 is a wasteful number, since it uses less digits than its factorization.

3929257525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157170311 (or 157170306 counting only the distinct ones).

The product of its digits is 1701000, while the sum is 49.

The square root of 3929257525 is about 62683.7899699755. The cubic root of 3929257525 is about 1577.9872791753.

The spelling of 3929257525 in words is "three billion, nine hundred twenty-nine million, two hundred fifty-seven thousand, five hundred twenty-five".