5255438129 has 4 divisors (see below), whose sum is σ = 5255819376. Its totient is φ = 5255056884.

The previous prime is 5255438099. The next prime is 5255438131. The reversal of 5255438129 is 9218345525.

5255438129 is digitally balanced in base 3, 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5255438129 - 2²⁴ = 5238660913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5255438129.

It is not an unprimeable number, because it can be changed into a prime (5255438189) 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, 169139 + ... + 197784.

It is an arithmetic number, because the mean of its divisors is an integer number (1313954844).

Almost surely, 2^5255438129 is an apocalyptic number.

It is an amenable number.

5255438129 is a deficient number, since it is larger than the sum of its proper divisors (381247).

5255438129 is a wasteful number, since it uses less digits than its factorization.

5255438129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381246.

The product of its digits is 432000, while the sum is 44.

The square root of 5255438129 is about 72494.4006734313. The cubic root of 5255438129 is about 1738.6132131809.

The spelling of 5255438129 in words is "five billion, two hundred fifty-five million, four hundred thirty-eight thousand, one hundred twenty-nine".