225943420 has 12 divisors (see below), whose sum is σ = 474481224. Its totient is φ = 90377360.

The previous prime is 225943373. The next prime is 225943427. The reversal of 225943420 is 24349522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225943427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5648566 + ... + 5648605.

It is an arithmetic number, because the mean of its divisors is an integer number (39540102).

Almost surely, 2^225943420 is an apocalyptic number.

225943420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225943420 is an abundant number, since it is smaller than the sum of its proper divisors (248537804).

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

225943420 is a wasteful number, since it uses less digits than its factorization.

225943420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11297180 (or 11297178 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 225943420 is about 15031.4144377700. The cubic root of 225943420 is about 609.0690987823.

The spelling of 225943420 in words is "two hundred twenty-five million, nine hundred forty-three thousand, four hundred twenty".