12512250413 has 4 divisors (see below), whose sum is σ = 13474731228. Its totient is φ = 11549769600.

The previous prime is 12512250407. The next prime is 12512250463. The reversal of 12512250413 is 31405221521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2594679844 + 9917570569 = 50938^2 + 99587^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512250413 - 2¹² = 12512246317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12512250403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481240388 + ... + 481240413.

It is an arithmetic number, because the mean of its divisors is an integer number (3368682807).

Almost surely, 2^12512250413 is an apocalyptic number.

12512250413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12512250413 is a deficient number, since it is larger than the sum of its proper divisors (962480815).

12512250413 is an equidigital number, since it uses as much as digits as its factorization.

12512250413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962480814.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12512250413 its reverse (31405221521), we get a palindrome (43917471934).

The spelling of 12512250413 in words is "twelve billion, five hundred twelve million, two hundred fifty thousand, four hundred thirteen".