22375825421 has 2 divisors, whose sum is σ = 22375825422. Its totient is φ = 22375825420.

The previous prime is 22375825403. The next prime is 22375825429. The reversal of 22375825421 is 12452857322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22361912521 + 13912900 = 149539^2 + 3730^2 .

It is a cyclic number.

It is not a de Polignac number, because 22375825421 - 2³⁴ = 5195956237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22375825429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11187912710 + 11187912711.

It is an arithmetic number, because the mean of its divisors is an integer number (11187912711).

Almost surely, 2^22375825421 is an apocalyptic number.

It is an amenable number.

22375825421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22375825421 is an equidigital number, since it uses as much as digits as its factorization.

22375825421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 41.

The spelling of 22375825421 in words is "twenty-two billion, three hundred seventy-five million, eight hundred twenty-five thousand, four hundred twenty-one".