12625131065 has 8 divisors (see below), whose sum is σ = 15165669960. Its totient is φ = 10089763072.

The previous prime is 12625131047. The next prime is 12625131139. The reversal of 12625131065 is 56013152621.

It can be written as a sum of positive squares in 4 ways, for example, as 3498959104 + 9126171961 = 59152^2 + 95531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12625131065 - 2²² = 12620936761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287350 + ... + 1297119.

It is an arithmetic number, because the mean of its divisors is an integer number (1895708745).

Almost surely, 2^12625131065 is an apocalyptic number.

It is an amenable number.

12625131065 is a deficient number, since it is larger than the sum of its proper divisors (2540538895).

12625131065 is an equidigital number, since it uses as much as digits as its factorization.

12625131065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585451.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 12625131065 its reverse (56013152621), we get a palindrome (68638283686).

The spelling of 12625131065 in words is "twelve billion, six hundred twenty-five million, one hundred thirty-one thousand, sixty-five".