13125535403525 has 12 divisors (see below), whose sum is σ = 16275718964772. Its totient is φ = 10500392797440.

The previous prime is 13125535403489. The next prime is 13125535403527. The reversal of 13125535403525 is 52530453552131.

It can be written as a sum of positive squares in 6 ways, for example, as 8034971044 + 13117500432481 = 89638^2 + 3621809^2 .

It is not a de Polignac number, because 13125535403525 - 2¹⁶ = 13125535337989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125535403527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8663069 + ... + 10064781.

It is an arithmetic number, because the mean of its divisors is an integer number (1356309913731).

Almost surely, 2^{13125535403525} is an apocalyptic number.

It is an amenable number.

13125535403525 is a deficient number, since it is larger than the sum of its proper divisors (3150183561247).

13125535403525 is a wasteful number, since it uses less digits than its factorization.

13125535403525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776280 (or 1776275 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 44.

Adding to 13125535403525 its reverse (52530453552131), we get a palindrome (65655988955656).

The spelling of 13125535403525 in words is "thirteen trillion, one hundred twenty-five billion, five hundred thirty-five million, four hundred three thousand, five hundred twenty-five".