225423040 has 28 divisors (see below), whose sum is σ = 536789376. Its totient is φ = 90169088.

The previous prime is 225423017. The next prime is 225423091. The reversal of 225423040 is 40324522.

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, 351904 + ... + 352543.

Almost surely, 2^225423040 is an apocalyptic number.

225423040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225423040 is an abundant number, since it is smaller than the sum of its proper divisors (311366336).

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

225423040 is an equidigital number, since it uses as much as digits as its factorization.

225423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704464 (or 704454 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 225423040 is about 15014.0947113038. The cubic root of 225423040 is about 608.6011482743.

Adding to 225423040 its reverse (40324522), we get a palindrome (265747562).

The spelling of 225423040 in words is "two hundred twenty-five million, four hundred twenty-three thousand, forty".