22125266643 has 4 divisors (see below), whose sum is σ = 29500355528. Its totient is φ = 14750177760.

The previous prime is 22125266627. The next prime is 22125266663. The reversal of 22125266643 is 34666252122.

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

It is not a de Polignac number, because 22125266643 - 2⁴ = 22125266627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125266663) 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 3 ways as a sum of consecutive naturals, for example, 3687544438 + ... + 3687544443.

It is an arithmetic number, because the mean of its divisors is an integer number (7375088882).

Almost surely, 2^22125266643 is an apocalyptic number.

22125266643 is a deficient number, since it is larger than the sum of its proper divisors (7375088885).

22125266643 is an equidigital number, since it uses as much as digits as its factorization.

22125266643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7375088884.

The product of its digits is 207360, while the sum is 39.

The spelling of 22125266643 in words is "twenty-two billion, one hundred twenty-five million, two hundred sixty-six thousand, six hundred forty-three".