5125509 has 12 divisors (see below), whose sum is σ = 7642752. Its totient is φ = 3306600.

The previous prime is 5125493. The next prime is 5125511. The reversal of 5125509 is 9055215.

5125509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5125509 - 2⁴ = 5125493 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5125529) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8907 + ... + 9464.

It is an arithmetic number, because the mean of its divisors is an integer number (636896).

Almost surely, 2^5125509 is an apocalyptic number.

It is an amenable number.

5125509 is a deficient number, since it is larger than the sum of its proper divisors (2517243).

5125509 is a wasteful number, since it uses less digits than its factorization.

5125509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18408 (or 18405 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 5125509 is about 2263.9587010367. The cubic root of 5125509 is about 172.4165696109.

The spelling of 5125509 in words is "five million, one hundred twenty-five thousand, five hundred nine".