13445433225251 has 4 divisors (see below), whose sum is σ = 13445675022600. Its totient is φ = 13445191427904.

The previous prime is 13445433225221. The next prime is 13445433225271. The reversal of 13445433225251 is 15252233454431.

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

It is a cyclic number.

It is not a de Polignac number, because 13445433225251 - 2¹⁰ = 13445433224227 is a prime.

It is a super-2 number, since 2×13445433225251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13445433225221) 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, 120815246 + ... + 120926483.

It is an arithmetic number, because the mean of its divisors is an integer number (3361418755650).

Almost surely, 2^{13445433225251} is an apocalyptic number.

13445433225251 is a deficient number, since it is larger than the sum of its proper divisors (241797349).

13445433225251 is an equidigital number, since it uses as much as digits as its factorization.

13445433225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241797348.

The product of its digits is 1728000, while the sum is 44.

Adding to 13445433225251 its reverse (15252233454431), we get a palindrome (28697666679682).

The spelling of 13445433225251 in words is "thirteen trillion, four hundred forty-five billion, four hundred thirty-three million, two hundred twenty-five thousand, two hundred fifty-one".