13220653145525 has 24 divisors (see below), whose sum is σ = 19381607771520. Its totient is φ = 8752984148160.

The previous prime is 13220653145473. The next prime is 13220653145527. The reversal of 13220653145525 is 52554135602231.

It is not a de Polignac number, because 13220653145525 - 2²² = 13220648951221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220653145527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1302522329 + ... + 1302532478.

It is an arithmetic number, because the mean of its divisors is an integer number (807566990480).

Almost surely, 2^{13220653145525} is an apocalyptic number.

It is an amenable number.

13220653145525 is a deficient number, since it is larger than the sum of its proper divisors (6160954625995).

13220653145525 is a wasteful number, since it uses less digits than its factorization.

13220653145525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605054853 (or 2605054848 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

Adding to 13220653145525 its reverse (52554135602231), we get a palindrome (65774788747756).

The spelling of 13220653145525 in words is "thirteen trillion, two hundred twenty billion, six hundred fifty-three million, one hundred forty-five thousand, five hundred twenty-five".