12520041245 has 4 divisors (see below), whose sum is σ = 15024049500. Its totient is φ = 10016032992.

The previous prime is 12520041227. The next prime is 12520041253. The reversal of 12520041245 is 54214002521.

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 1590175129 + 10929866116 = 39877^2 + 104546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12520041245 is a prime.

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, 1252004120 + ... + 1252004129.

It is an arithmetic number, because the mean of its divisors is an integer number (3756012375).

Almost surely, 2^12520041245 is an apocalyptic number.

It is an amenable number.

12520041245 is a deficient number, since it is larger than the sum of its proper divisors (2504008255).

12520041245 is an equidigital number, since it uses as much as digits as its factorization.

12520041245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504008254.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 12520041245 its reverse (54214002521), we get a palindrome (66734043766).

The spelling of 12520041245 in words is "twelve billion, five hundred twenty million, forty-one thousand, two hundred forty-five".