22320225 has 48 divisors (see below), whose sum is σ = 42011200. Its totient is φ = 11612160.

The previous prime is 22320223. The next prime is 22320241. The reversal of 22320225 is 52202322.

It is not a de Polignac number, because 22320225 - 2¹ = 22320223 is a prime.

It is a super-3 number, since 3×22320225³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22320198 and 22320207.

It is not an unprimeable number, because it can be changed into a prime (22320223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28641 + ... + 29409.

Almost surely, 2^22320225 is an apocalyptic number.

22320225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22320225 is a deficient number, since it is larger than the sum of its proper divisors (19690975).

22320225 is a wasteful number, since it uses less digits than its factorization.

22320225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22320225 is about 4724.4285368709. The cubic root of 22320225 is about 281.5569094128.

Adding to 22320225 its reverse (52202322), we get a palindrome (74522547).

The spelling of 22320225 in words is "twenty-two million, three hundred twenty thousand, two hundred twenty-five".