213225252 has 24 divisors (see below), whose sum is σ = 497939232. Its totient is φ = 71016000.

The previous prime is 213225217. The next prime is 213225269. The reversal of 213225252 is 252522312.

213225252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 9127 + ... + 22577.

It is an arithmetic number, because the mean of its divisors is an integer number (20747468).

Almost surely, 2^213225252 is an apocalyptic number.

It is an amenable number.

213225252 is an abundant number, since it is smaller than the sum of its proper divisors (284713980).

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

213225252 is a wasteful number, since it uses less digits than its factorization.

213225252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14779 (or 14777 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 213225252 is about 14602.2344865435. The cubic root of 213225252 is about 597.4197082868.

Adding to 213225252 its reverse (252522312), we get a palindrome (465747564).

The spelling of 213225252 in words is "two hundred thirteen million, two hundred twenty-five thousand, two hundred fifty-two".