223135425252 has 18 divisors (see below), whose sum is σ = 564036769478. Its totient is φ = 74378475072.

The previous prime is 223135425229. The next prime is 223135425287. The reversal of 223135425252 is 252524531322.

It is a happy number.

223135425252 is a `hidden beast` number, since 2 + 2 + 3 + 1 + 354 + 252 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 221072993856 + 2062431396 = 470184^2 + 45414^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×223135425252³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6198206257 = 223135425252 / (2 + 2 + 3 + 1 + 3 + 5 + 4 + 2 + 5 + 2 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3099103093 + ... + 3099103164.

Almost surely, 2^223135425252 is an apocalyptic number.

It is an amenable number.

223135425252 is an abundant number, since it is smaller than the sum of its proper divisors (340901344226).

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

223135425252 is a wasteful number, since it uses less digits than its factorization.

223135425252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198206267 (or 6198206262 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 223135425252 its reverse (252524531322), we get a palindrome (475659956574).

The spelling of 223135425252 in words is "two hundred twenty-three billion, one hundred thirty-five million, four hundred twenty-five thousand, two hundred fifty-two".