252555220 has 24 divisors (see below), whose sum is σ = 558280800. Its totient is φ = 95704992.

The previous prime is 252555209. The next prime is 252555241. The reversal of 252555220 is 22555252.

252555220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331930 + ... + 332689.

It is an arithmetic number, because the mean of its divisors is an integer number (23261700).

Almost surely, 2^252555220 is an apocalyptic number.

252555220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252555220 is an abundant number, since it is smaller than the sum of its proper divisors (305725580).

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

252555220 is a wasteful number, since it uses less digits than its factorization.

252555220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664647 (or 664645 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 252555220 is about 15891.9860307011. The cubic root of 252555220 is about 632.0995043083.

The spelling of 252555220 in words is "two hundred fifty-two million, five hundred fifty-five thousand, two hundred twenty".