12225423251 has 8 divisors (see below), whose sum is σ = 13312621200. Its totient is φ = 11182600800.

The previous prime is 12225423233. The next prime is 12225423257. The reversal of 12225423251 is 15232452221.

It is a happy number.

12225423251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12225423251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12225423257) 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 7 ways as a sum of consecutive naturals, for example, 11093300 + ... + 11094401.

It is an arithmetic number, because the mean of its divisors is an integer number (1664077650).

Almost surely, 2^12225423251 is an apocalyptic number.

12225423251 is a deficient number, since it is larger than the sum of its proper divisors (1087197949).

12225423251 is a wasteful number, since it uses less digits than its factorization.

12225423251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187749.

The product of its digits is 9600, while the sum is 29.

Adding to 12225423251 its reverse (15232452221), we get a palindrome (27457875472).

The spelling of 12225423251 in words is "twelve billion, two hundred twenty-five million, four hundred twenty-three thousand, two hundred fifty-one".