225066840 has 32 divisors (see below), whose sum is σ = 675200880. Its totient is φ = 60017792.

The previous prime is 225066833. The next prime is 225066857. The reversal of 225066840 is 48660522.

It is a congruent number.

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, 937659 + ... + 937898.

Almost surely, 2^225066840 is an apocalyptic number.

225066840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225066840 is an abundant number, since it is smaller than the sum of its proper divisors (450134040).

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

225066840 is a wasteful number, since it uses less digits than its factorization.

225066840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875571 (or 1875567 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 225066840 is about 15002.2278345584. The cubic root of 225066840 is about 608.2804209102.

The spelling of 225066840 in words is "two hundred twenty-five million, sixty-six thousand, eight hundred forty".