13325216251 has 4 divisors (see below), whose sum is σ = 13325461992. Its totient is φ = 13324970512.

The previous prime is 13325216243. The next prime is 13325216263. The reversal of 13325216251 is 15261252331.

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 13325216251 - 2³ = 13325216243 is a prime.

It is a super-2 number, since 2×13325216251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13325216291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705 + ... + 163258.

It is an arithmetic number, because the mean of its divisors is an integer number (3331365498).

Almost surely, 2^13325216251 is an apocalyptic number.

13325216251 is a deficient number, since it is larger than the sum of its proper divisors (245741).

13325216251 is an equidigital number, since it uses as much as digits as its factorization.

13325216251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245740.

The product of its digits is 10800, while the sum is 31.

Adding to 13325216251 its reverse (15261252331), we get a palindrome (28586468582).

The spelling of 13325216251 in words is "thirteen billion, three hundred twenty-five million, two hundred sixteen thousand, two hundred fifty-one".