12243025551 has 4 divisors (see below), whose sum is σ = 16324034072. Its totient is φ = 8162017032.

The previous prime is 12243025547. The next prime is 12243025559. The reversal of 12243025551 is 15552034221.

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

It is not a de Polignac number, because 12243025551 - 2² = 12243025547 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 (12243025559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040504256 + ... + 2040504261.

It is an arithmetic number, because the mean of its divisors is an integer number (4081008518).

Almost surely, 2^12243025551 is an apocalyptic number.

12243025551 is a deficient number, since it is larger than the sum of its proper divisors (4081008521).

12243025551 is an equidigital number, since it uses as much as digits as its factorization.

12243025551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081008520.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 12243025551 its reverse (15552034221), we get a palindrome (27795059772).

The spelling of 12243025551 in words is "twelve billion, two hundred forty-three million, twenty-five thousand, five hundred fifty-one".