225812478 has 8 divisors (see below), whose sum is σ = 451624968. Its totient is φ = 75270824.

The previous prime is 225812471. The next prime is 225812501. The reversal of 225812478 is 874218522.

It is a sphenic number, since it is the product of 3 distinct primes.

225812478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225812471) 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, 18817701 + ... + 18817712.

It is an arithmetic number, because the mean of its divisors is an integer number (56453121).

Almost surely, 2^225812478 is an apocalyptic number.

225812478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

225812478 is a wasteful number, since it uses less digits than its factorization.

225812478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37635418.

The product of its digits is 71680, while the sum is 39.

The square root of 225812478 is about 15027.0581951359. The cubic root of 225812478 is about 608.9514172002.

The spelling of 225812478 in words is "two hundred twenty-five million, eight hundred twelve thousand, four hundred seventy-eight".