5255138315525 has 18 divisors (see below), whose sum is σ = 7580268902610. Its totient is φ = 3603523415520.

The previous prime is 5255138315521. The next prime is 5255138315549.

5255138315525 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 251264595169 + 5003873720356 = 501263^2 + 2236934^2 .

It is not a de Polignac number, because 5255138315525 - 2² = 5255138315521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255138315521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2144953190 + ... + 2144955639.

It is an arithmetic number, because the mean of its divisors is an integer number (421126050145).

Almost surely, 2^{5255138315525} is an apocalyptic number.

It is an amenable number.

5255138315525 is a deficient number, since it is larger than the sum of its proper divisors (2325130587085).

5255138315525 is a wasteful number, since it uses less digits than its factorization.

5255138315525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289908853 (or 4289908841 counting only the distinct ones).

The product of its digits is 4500000, while the sum is 50.

The spelling of 5255138315525 in words is "five trillion, two hundred fifty-five billion, one hundred thirty-eight million, three hundred fifteen thousand, five hundred twenty-five".