13220925087 has 4 divisors (see below), whose sum is σ = 17627900120. Its totient is φ = 8813950056.

The previous prime is 13220925083. The next prime is 13220925089. The reversal of 13220925087 is 78052902231.

13220925087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13220925087 - 2² = 13220925083 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 (13220925083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203487512 + ... + 2203487517.

It is an arithmetic number, because the mean of its divisors is an integer number (4406975030).

Almost surely, 2^13220925087 is an apocalyptic number.

13220925087 is a deficient number, since it is larger than the sum of its proper divisors (4406975033).

13220925087 is an equidigital number, since it uses as much as digits as its factorization.

13220925087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406975032.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 13220925087 in words is "thirteen billion, two hundred twenty million, nine hundred twenty-five thousand, eighty-seven".