225612478 has 32 divisors (see below), whose sum is σ = 417574080. Its totient is φ = 89026560.

The previous prime is 225612461. The next prime is 225612481. The reversal of 225612478 is 874216522.

It is a happy number.

225612478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82558 + ... + 85246.

It is an arithmetic number, because the mean of its divisors is an integer number (13049190).

Almost surely, 2^225612478 is an apocalyptic number.

225612478 is a deficient number, since it is larger than the sum of its proper divisors (191961602).

225612478 is a wasteful number, since it uses less digits than its factorization.

225612478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172.

The product of its digits is 53760, while the sum is 37.

The square root of 225612478 is about 15020.4020585336. The cubic root of 225612478 is about 608.7715832388.

The spelling of 225612478 in words is "two hundred twenty-five million, six hundred twelve thousand, four hundred seventy-eight".