13131312625 has 16 divisors (see below), whose sum is σ = 16505798400. Its totient is φ = 10429460400.

The previous prime is 13131312587. The next prime is 13131312641. The reversal of 13131312625 is 52621313131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13131312625 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13131312593 and 13131312602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360505 + ... + 395254.

It is an arithmetic number, because the mean of its divisors is an integer number (1031612400).

Almost surely, 2^13131312625 is an apocalyptic number.

It is an amenable number.

13131312625 is a deficient number, since it is larger than the sum of its proper divisors (3374485775).

13131312625 is an equidigital number, since it uses as much as digits as its factorization.

13131312625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755913 (or 755903 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

Adding to 13131312625 its reverse (52621313131), we get a palindrome (65752625756).

The spelling of 13131312625 in words is "thirteen billion, one hundred thirty-one million, three hundred twelve thousand, six hundred twenty-five".