225075820 has 24 divisors (see below), whose sum is σ = 473379984. Its totient is φ = 89893056.

The previous prime is 225075811. The next prime is 225075827. The reversal of 225075820 is 28570522.

225075820 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (225075827) 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, 5422 + ... + 21898.

It is an arithmetic number, because the mean of its divisors is an integer number (19724166).

Almost surely, 2^225075820 is an apocalyptic number.

225075820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225075820 is an abundant number, since it is smaller than the sum of its proper divisors (248304164).

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

225075820 is a wasteful number, since it uses less digits than its factorization.

225075820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17169 (or 17167 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 225075820 is about 15002.5271204554. The cubic root of 225075820 is about 608.2885107819.

The spelling of 225075820 in words is "two hundred twenty-five million, seventy-five thousand, eight hundred twenty".