12530352052 has 12 divisors (see below), whose sum is σ = 21934016356. Its totient is φ = 6263490240.

The previous prime is 12530352049. The next prime is 12530352073. The reversal of 12530352052 is 25025303521.

It can be written as a sum of positive squares in 2 ways, for example, as 10480435876 + 2049916176 = 102374^2 + 45276^2 .

It is a super-2 number, since 2×12530352052² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12530352052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404649 + ... + 434512.

Almost surely, 2^12530352052 is an apocalyptic number.

It is an amenable number.

12530352052 is a deficient number, since it is larger than the sum of its proper divisors (9403664304).

12530352052 is a wasteful number, since it uses less digits than its factorization.

12530352052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842898 (or 842896 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 12530352052 its reverse (25025303521), we get a palindrome (37555655573).

The spelling of 12530352052 in words is "twelve billion, five hundred thirty million, three hundred fifty-two thousand, fifty-two".