225122020 has 24 divisors (see below), whose sum is σ = 473788224. Its totient is φ = 89852256.

The previous prime is 225121991. The next prime is 225122039. The reversal of 225122020 is 20221522.

It is a junction number, because it is equal to n+sod(n) for n = 225121985 and 225122003.

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, 2712 + ... + 21391.

It is an arithmetic number, because the mean of its divisors is an integer number (19741176).

Almost surely, 2^225122020 is an apocalyptic number.

225122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225122020 is an abundant number, since it is smaller than the sum of its proper divisors (248666204).

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

225122020 is a wasteful number, since it uses less digits than its factorization.

225122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24579 (or 24577 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 225122020 is about 15004.0667820428. The cubic root of 225122020 is about 608.3301278787.

Adding to 225122020 its reverse (20221522), we get a palindrome (245343542).

The spelling of 225122020 in words is "two hundred twenty-five million, one hundred twenty-two thousand, twenty".