13201256125 has 16 divisors (see below), whose sum is σ = 16700866416. Its totient is φ = 10416326400.

The previous prime is 13201256027. The next prime is 13201256129. The reversal of 13201256125 is 52165210231.

It can be written as a sum of positive squares in 8 ways, for example, as 8876089369 + 4325166756 = 94213^2 + 65766^2 .

It is not a de Polignac number, because 13201256125 - 2⁷ = 13201255997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13201256093 and 13201256102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201256129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714232 + ... + 732481.

It is an arithmetic number, because the mean of its divisors is an integer number (1043804151).

Almost surely, 2^13201256125 is an apocalyptic number.

It is an amenable number.

13201256125 is a deficient number, since it is larger than the sum of its proper divisors (3499610291).

13201256125 is an equidigital number, since it uses as much as digits as its factorization.

13201256125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446801 (or 1446791 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 13201256125 its reverse (52165210231), we get a palindrome (65366466356).

The spelling of 13201256125 in words is "thirteen billion, two hundred one million, two hundred fifty-six thousand, one hundred twenty-five".