22250665641 has 4 divisors (see below), whose sum is σ = 29667554192. Its totient is φ = 14833777092.

The previous prime is 22250665637. The next prime is 22250665643. The reversal of 22250665641 is 14656605222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22250665641 - 2² = 22250665637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22250665641.

It is not an unprimeable number, because it can be changed into a prime (22250665643) 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, 3708444271 + ... + 3708444276.

It is an arithmetic number, because the mean of its divisors is an integer number (7416888548).

Almost surely, 2^22250665641 is an apocalyptic number.

It is an amenable number.

22250665641 is a deficient number, since it is larger than the sum of its proper divisors (7416888551).

22250665641 is an equidigital number, since it uses as much as digits as its factorization.

22250665641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416888550.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 22250665641 in words is "twenty-two billion, two hundred fifty million, six hundred sixty-five thousand, six hundred forty-one".