220204225 has 24 divisors (see below), whose sum is σ = 279133920. Its totient is φ = 172273920.

The previous prime is 220204223. The next prime is 220204267. The reversal of 220204225 is 522402022.

It is not a de Polignac number, because 220204225 - 2¹ = 220204223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220204223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496854 + ... + 497296.

It is an arithmetic number, because the mean of its divisors is an integer number (11630580).

Almost surely, 2^220204225 is an apocalyptic number.

220204225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220204225 is a deficient number, since it is larger than the sum of its proper divisors (58929695).

220204225 is a wasteful number, since it uses less digits than its factorization.

220204225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 220204225 is about 14839.2798005833. The cubic root of 220204225 is about 603.8678140405.

Adding to 220204225 its reverse (522402022), we get a palindrome (742606247).

The spelling of 220204225 in words is "two hundred twenty million, two hundred four thousand, two hundred twenty-five".