5125556011509 has 6 divisors (see below), whose sum is σ = 7403580905526. Its totient is φ = 3417037341000.

The previous prime is 5125556011463. The next prime is 5125556011519. The reversal of 5125556011509 is 9051106555215.

5125556011509 is a `hidden beast` number, since 5 + 1 + 25 + 5 + 5 + 601 + 15 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3602498900625 + 1523057110884 = 1898025^2 + 1234122^2 .

It is not a de Polignac number, because 5125556011509 - 2⁸ = 5125556011253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5125556011519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284753111742 + ... + 284753111759.

It is an arithmetic number, because the mean of its divisors is an integer number (1233930150921).

Almost surely, 2^{5125556011509} is an apocalyptic number.

It is an amenable number.

5125556011509 is a deficient number, since it is larger than the sum of its proper divisors (2278024894017).

5125556011509 is a wasteful number, since it uses less digits than its factorization.

5125556011509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569506223507 (or 569506223504 counting only the distinct ones).

The product of its (nonzero) digits is 337500, while the sum is 45.

The spelling of 5125556011509 in words is "five trillion, one hundred twenty-five billion, five hundred fifty-six million, eleven thousand, five hundred nine".