3725725517 has 4 divisors (see below), whose sum is σ = 3726203100. Its totient is φ = 3725247936.

The previous prime is 3725725499. The next prime is 3725725547. The reversal of 3725725517 is 7155275273.

3725725517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7155275273 = 773 ⋅9256501.

It can be written as a sum of positive squares in 2 ways, for example, as 1436485801 + 2289239716 = 37901^2 + 47846^2 .

It is a cyclic number.

It is not a de Polignac number, because 3725725517 - 2⁶ = 3725725453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3725725547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226892 + ... + 242757.

It is an arithmetic number, because the mean of its divisors is an integer number (931550775).

Almost surely, 2^3725725517 is an apocalyptic number.

It is an amenable number.

3725725517 is a deficient number, since it is larger than the sum of its proper divisors (477583).

3725725517 is an equidigital number, since it uses as much as digits as its factorization.

3725725517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477582.

The product of its digits is 514500, while the sum is 44.

The square root of 3725725517 is about 61038.7214561380. The cubic root of 3725725517 is about 1550.2567062861.

The spelling of 3725725517 in words is "three billion, seven hundred twenty-five million, seven hundred twenty-five thousand, five hundred seventeen".