225720206 has 16 divisors (see below), whose sum is σ = 355428864. Its totient is φ = 107303064.

The previous prime is 225720199. The next prime is 225720217. The reversal of 225720206 is 602027522.

It is a super-2 number, since 2×225720206² = 101899222793364872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7010 + ... + 22373.

It is an arithmetic number, because the mean of its divisors is an integer number (22214304).

Almost surely, 2^225720206 is an apocalyptic number.

225720206 is a deficient number, since it is larger than the sum of its proper divisors (129708658).

225720206 is a wasteful number, since it uses less digits than its factorization.

225720206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29575.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 225720206 is about 15023.9876863634. The cubic root of 225720206 is about 608.8684622032.

Adding to 225720206 its reverse (602027522), we get a palindrome (827747728).

The spelling of 225720206 in words is "two hundred twenty-five million, seven hundred twenty thousand, two hundred six".