22575623821 has 4 divisors (see below), whose sum is σ = 22578847200. Its totient is φ = 22572400444.

The previous prime is 22575623809. The next prime is 22575623839. The reversal of 22575623821 is 12832657522.

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 a cyclic number.

It is not a de Polignac number, because 22575623821 - 2⁵ = 22575623789 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 (22575323821) 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, 1601161 + ... + 1615198.

It is an arithmetic number, because the mean of its divisors is an integer number (5644711800).

Almost surely, 2^22575623821 is an apocalyptic number.

It is an amenable number.

22575623821 is a deficient number, since it is larger than the sum of its proper divisors (3223379).

22575623821 is an equidigital number, since it uses as much as digits as its factorization.

22575623821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223378.

The product of its digits is 403200, while the sum is 43.

The spelling of 22575623821 in words is "twenty-two billion, five hundred seventy-five million, six hundred twenty-three thousand, eight hundred twenty-one".