22354225 has 24 divisors (see below), whose sum is σ = 28795032. Its totient is φ = 17203200.

The previous prime is 22354217. The next prime is 22354231. The reversal of 22354225 is 52245322.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 20493729 + 1860496 = 4527^2 + 1364^2 .

It is not a de Polignac number, because 22354225 - 2³ = 22354217 is a prime.

It is a super-2 number, since 2×22354225² = 999422750701250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 22354225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115729 + ... + 115921.

It is an arithmetic number, because the mean of its divisors is an integer number (1199793).

Almost surely, 2^22354225 is an apocalyptic number.

22354225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22354225 is a deficient number, since it is larger than the sum of its proper divisors (6440807).

22354225 is a wasteful number, since it uses less digits than its factorization.

22354225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 352 counting only the distinct ones).

The product of its digits is 4800, while the sum is 25.

The square root of 22354225 is about 4728.0254863949. The cubic root of 22354225 is about 281.6998004196.

Adding to 22354225 its reverse (52245322), we get a palindrome (74599547).

The spelling of 22354225 in words is "twenty-two million, three hundred fifty-four thousand, two hundred twenty-five".