225843390 has 40 divisors (see below), whose sum is σ = 607269960. Its totient is φ = 60224688.

The previous prime is 225843379. The next prime is 225843421. The reversal of 225843390 is 93348522.

225843390 is a `hidden beast` number, since 225 + 8 + 43 + 390 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 138600 + ... + 140219.

It is an arithmetic number, because the mean of its divisors is an integer number (15181749).

Almost surely, 2^225843390 is an apocalyptic number.

225843390 is an abundant number, since it is smaller than the sum of its proper divisors (381426570).

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

225843390 is a wasteful number, since it uses less digits than its factorization.

225843390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278838 (or 278829 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 225843390 is about 15028.0867045676. The cubic root of 225843390 is about 608.9792028618.

The spelling of 225843390 in words is "two hundred twenty-five million, eight hundred forty-three thousand, three hundred ninety".