22425229 has 4 divisors (see below), whose sum is σ = 22436284. Its totient is φ = 22414176.

The previous prime is 22425223. The next prime is 22425233. The reversal of 22425229 is 92252422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1512900 + 20912329 = 1230^2 + 4573^2 .

It is a cyclic number.

It is not a de Polignac number, because 22425229 - 2²³ = 14036621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22425197 and 22425206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22425223) 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 in 3 ways as a sum of consecutive naturals, for example, 1512 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (5609071).

Almost surely, 2^22425229 is an apocalyptic number.

It is an amenable number.

22425229 is a deficient number, since it is larger than the sum of its proper divisors (11055).

22425229 is an equidigital number, since it uses as much as digits as its factorization.

22425229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054.

The product of its digits is 5760, while the sum is 28.

The square root of 22425229 is about 4735.5283760104. The cubic root of 22425229 is about 281.9977407059.

The spelling of 22425229 in words is "twenty-two million, four hundred twenty-five thousand, two hundred twenty-nine".