13045225504521 has 48 divisors (see below), whose sum is σ = 20272247265600. Its totient is φ = 7440110802432.

The previous prime is 13045225504489. The next prime is 13045225504523. The reversal of 13045225504521 is 12540552254031.

It is not a de Polignac number, because 13045225504521 - 2⁵ = 13045225504489 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13045225504521.

It is not an unprimeable number, because it can be changed into a prime (13045225504523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 910781466 + ... + 910795788.

It is an arithmetic number, because the mean of its divisors is an integer number (422338484700).

Almost surely, 2^{13045225504521} is an apocalyptic number.

It is an amenable number.

13045225504521 is a deficient number, since it is larger than the sum of its proper divisors (7227021761079).

13045225504521 is a wasteful number, since it uses less digits than its factorization.

13045225504521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25798 (or 25791 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 13045225504521 its reverse (12540552254031), we get a palindrome (25585777758552).

The spelling of 13045225504521 in words is "thirteen trillion, forty-five billion, two hundred twenty-five million, five hundred four thousand, five hundred twenty-one".