220206225 has 24 divisors (see below), whose sum is σ = 372546592. Its totient is φ = 114710400.

The previous prime is 220206223. The next prime is 220206227. The reversal of 220206225 is 522602022.

It is an interprime number because it is at equal distance from previous prime (220206223) and next prime (220206227).

It is not a de Polignac number, because 220206225 - 2¹ = 220206223 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220206223) 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, 30916 + ... + 37365.

Almost surely, 2^220206225 is an apocalyptic number.

220206225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220206225 is a deficient number, since it is larger than the sum of its proper divisors (152340367).

220206225 is a wasteful number, since it uses less digits than its factorization.

220206225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68337 (or 68332 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 220206225 is about 14839.3471891455. The cubic root of 220206225 is about 603.8696422403.

Adding to 220206225 its reverse (522602022), we get a palindrome (742808247).

The spelling of 220206225 in words is "two hundred twenty million, two hundred six thousand, two hundred twenty-five".