4539138125 has 20 divisors (see below), whose sum is σ = 6005774412. Its totient is φ = 3417696000.

The previous prime is 4539138119. The next prime is 4539138143. The reversal of 4539138125 is 5218319354.

It can be written as a sum of positive squares in 10 ways, for example, as 3528597604 + 1010540521 = 59402^2 + 31789^2 .

It is not a de Polignac number, because 4539138125 - 2¹⁶ = 4539072589 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 19 ways as a sum of consecutive naturals, for example, 202982 + ... + 224231.

Almost surely, 2^4539138125 is an apocalyptic number.

It is an amenable number.

4539138125 is a deficient number, since it is larger than the sum of its proper divisors (1466636287).

4539138125 is an equidigital number, since it uses as much as digits as its factorization.

4539138125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427250 (or 427235 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 4539138125 is about 67373.1261334963. The cubic root of 4539138125 is about 1655.7361572009.

The spelling of 4539138125 in words is "four billion, five hundred thirty-nine million, one hundred thirty-eight thousand, one hundred twenty-five".