12251445445242 has 24 divisors (see below), whose sum is σ = 26556826098816. Its totient is φ = 4081964743176.

The previous prime is 12251445445199. The next prime is 12251445445243. The reversal of 12251445445242 is 24254454415221.

12251445445242 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 14 + 4 + 544 + 52 + 42 = 666.

It is not an unprimeable number, because it can be changed into a prime (12251445445243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154159608 + ... + 154239059.

It is an arithmetic number, because the mean of its divisors is an integer number (1106534420784).

Almost surely, 2^{12251445445242} is an apocalyptic number.

12251445445242 is an abundant number, since it is smaller than the sum of its proper divisors (14305380653574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12251445445242 is a wasteful number, since it uses less digits than its factorization.

12251445445242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308400882 (or 308400879 counting only the distinct ones).

The product of its digits is 2048000, while the sum is 45.

The spelling of 12251445445242 in words is "twelve trillion, two hundred fifty-one billion, four hundred forty-five million, four hundred forty-five thousand, two hundred forty-two".