13125440422125 has 24 divisors (see below), whose sum is σ = 23660793936312. Its totient is φ = 7000234891200.

The previous prime is 13125440422099. The next prime is 13125440422153. The reversal of 13125440422125 is 52122404452131.

13125440422125 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 5 + 4 + 404 + 221 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2529302182884 + 10596138239241 = 1590378^2 + 3255171^2 .

It is not a de Polignac number, because 13125440422125 - 2¹⁵ = 13125440389357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13125440422125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5833527952 + ... + 5833530201.

It is an arithmetic number, because the mean of its divisors is an integer number (985866414013).

Almost surely, 2^{13125440422125} is an apocalyptic number.

13125440422125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13125440422125 is a deficient number, since it is larger than the sum of its proper divisors (10535353514187).

13125440422125 is a wasteful number, since it uses less digits than its factorization.

13125440422125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667058174 (or 11667058161 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 13125440422125 its reverse (52122404452131), we get a palindrome (65247844874256).

The spelling of 13125440422125 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty million, four hundred twenty-two thousand, one hundred twenty-five".