225780028 has 12 divisors (see below), whose sum is σ = 395663632. Its totient is φ = 112733280.

The previous prime is 225780011. The next prime is 225780041. The reversal of 225780028 is 820087522.

225780028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 225779975 and 225780002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35913 + ... + 41728.

Almost surely, 2^225780028 is an apocalyptic number.

It is an amenable number.

225780028 is a deficient number, since it is larger than the sum of its proper divisors (169883604).

225780028 is a wasteful number, since it uses less digits than its factorization.

225780028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78372 (or 78370 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 225780028 is about 15025.9784373597. The cubic root of 225780028 is about 608.9222463585.

The spelling of 225780028 in words is "two hundred twenty-five million, seven hundred eighty thousand, twenty-eight".