223225220 has 24 divisors (see below), whose sum is σ = 469093464. Its totient is φ = 89229056.

The previous prime is 223225213. The next prime is 223225229. The reversal of 223225220 is 22522322.

It can be written as a sum of positive squares in 4 ways, for example, as 857476 + 222367744 = 926^2 + 14912^2 .

It is a super-3 number, since 3×223225220³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 223225192 and 223225201.

It is not an unprimeable number, because it can be changed into a prime (223225229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36632 + ... + 42288.

It is an arithmetic number, because the mean of its divisors is an integer number (19545561).

Almost surely, 2^223225220 is an apocalyptic number.

223225220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223225220 is an abundant number, since it is smaller than the sum of its proper divisors (245868244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223225220 is a wasteful number, since it uses less digits than its factorization.

223225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639 (or 7637 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 223225220 is about 14940.7235433897. The cubic root of 223225220 is about 606.6167806395.

Adding to 223225220 its reverse (22522322), we get a palindrome (245747542).

The spelling of 223225220 in words is "two hundred twenty-three million, two hundred twenty-five thousand, two hundred twenty".