12520235051 has 16 divisors (see below), whose sum is σ = 12878527200. Its totient is φ = 12165189120.

The previous prime is 12520235029. The next prime is 12520235053. The reversal of 12520235051 is 15053202521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12520235051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12520235051.

It is not an unprimeable number, because it can be changed into a prime (12520235053) 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, 9198611 + ... + 9199971.

It is an arithmetic number, because the mean of its divisors is an integer number (804907950).

Almost surely, 2^12520235051 is an apocalyptic number.

12520235051 is a deficient number, since it is larger than the sum of its proper divisors (358292149).

12520235051 is a wasteful number, since it uses less digits than its factorization.

12520235051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 12520235051 its reverse (15053202521), we get a palindrome (27573437572).

The spelling of 12520235051 in words is "twelve billion, five hundred twenty million, two hundred thirty-five thousand, fifty-one".