225562820 has 48 divisors (see below), whose sum is σ = 558824448. Its totient is φ = 74839680.

The previous prime is 225562819. The next prime is 225562847. The reversal of 225562820 is 28265522.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21647 + ... + 30326.

It is an arithmetic number, because the mean of its divisors is an integer number (11642176).

Almost surely, 2^225562820 is an apocalyptic number.

225562820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225562820 is an abundant number, since it is smaller than the sum of its proper divisors (333261628).

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

225562820 is a wasteful number, since it uses less digits than its factorization.

225562820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52020 (or 52018 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 225562820 is about 15018.7489492301. The cubic root of 225562820 is about 608.7269157959.

The spelling of 225562820 in words is "two hundred twenty-five million, five hundred sixty-two thousand, eight hundred twenty".