225284620 has 24 divisors (see below), whose sum is σ = 516107088. Its totient is φ = 81921600.

The previous prime is 225284603. The next prime is 225284621. The reversal of 225284620 is 26482522.

It is not an unprimeable number, because it can be changed into a prime (225284621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511791 + ... + 512230.

It is an arithmetic number, because the mean of its divisors is an integer number (21504462).

Almost surely, 2^225284620 is an apocalyptic number.

225284620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225284620 is an abundant number, since it is smaller than the sum of its proper divisors (290822468).

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

225284620 is a wasteful number, since it uses less digits than its factorization.

225284620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024041 (or 1024039 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 225284620 is about 15009.4843349130. The cubic root of 225284620 is about 608.4765531726.

The spelling of 225284620 in words is "two hundred twenty-five million, two hundred eighty-four thousand, six hundred twenty".