12445052251 has 4 divisors (see below), whose sum is σ = 12655985400. Its totient is φ = 12234119104.

The previous prime is 12445052209. The next prime is 12445052281. The reversal of 12445052251 is 15225054421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15225054421 = 947 ⋅16077143.

It is a cyclic number.

It is not a de Polignac number, because 12445052251 - 2¹¹ = 12445050203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12445052201) 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 3 ways as a sum of consecutive naturals, for example, 105466486 + ... + 105466603.

It is an arithmetic number, because the mean of its divisors is an integer number (3163996350).

Almost surely, 2^12445052251 is an apocalyptic number.

12445052251 is a deficient number, since it is larger than the sum of its proper divisors (210933149).

12445052251 is an equidigital number, since it uses as much as digits as its factorization.

12445052251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210933148.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 12445052251 in words is "twelve billion, four hundred forty-five million, fifty-two thousand, two hundred fifty-one".