225204028 has 48 divisors (see below), whose sum is σ = 459264960. Its totient is φ = 94639104.

The previous prime is 225204013. The next prime is 225204071. The reversal of 225204028 is 820402522.

It is a junction number, because it is equal to n+sod(n) for n = 225203993 and 225204011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344550 + ... + 345202.

It is an arithmetic number, because the mean of its divisors is an integer number (9568020).

Almost surely, 2^225204028 is an apocalyptic number.

225204028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

225204028 is an abundant number, since it is smaller than the sum of its proper divisors (234060932).

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

225204028 is a wasteful number, since it uses less digits than its factorization.

225204028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 225204028 is about 15006.7993922755. The cubic root of 225204028 is about 608.4039869065.

The spelling of 225204028 in words is "two hundred twenty-five million, two hundred four thousand, twenty-eight".