223620223225 has 81 divisors (see below), whose sum is σ = 329559655437. Its totient is φ = 150082349760.

The previous prime is 223620223199. The next prime is 223620223241. The reversal of 223620223225 is 522322026322.

The square root of 223620223225 is 472885.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 30519740601 + 193100482624 = 174699^2 + 439432^2 .

It is not a de Polignac number, because 223620223225 - 2¹¹ = 223620221177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 976507411 + ... + 976507639.

Almost surely, 2^223620223225 is an apocalyptic number.

223620223225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

223620223225 is the 472885-th square number.

223620223225 is the 236443-rd centered octagonal number.

It is an amenable number.

223620223225 is a deficient number, since it is larger than the sum of its proper divisors (105939432212).

223620223225 is an frugal number, since it uses more digits than its factorization.

223620223225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 223620223225 its reverse (522322026322), we get a palindrome (745942249547).

The spelling of 223620223225 in words is "two hundred twenty-three billion, six hundred twenty million, two hundred twenty-three thousand, two hundred twenty-five".