12722175252 has 60 divisors (see below), whose sum is σ = 33283532436. Its totient is φ = 4237505280.

The previous prime is 12722175227. The next prime is 12722175253. The reversal of 12722175252 is 25257122721.

12722175252 is a `hidden beast` number, since 127 + 2 + 2 + 1 + 7 + 525 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5374942596 + 7347232656 = 73314^2 + 85716^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722175253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 433228 + ... + 461660.

Almost surely, 2^12722175252 is an apocalyptic number.

12722175252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12722175252 is an abundant number, since it is smaller than the sum of its proper divisors (20561357184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12722175252 is a wasteful number, since it uses less digits than its factorization.

12722175252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29830 (or 29819 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

Adding to 12722175252 its reverse (25257122721), we get a palindrome (37979297973).

The spelling of 12722175252 in words is "twelve billion, seven hundred twenty-two million, one hundred seventy-five thousand, two hundred fifty-two".