225972578 has 32 divisors (see below), whose sum is σ = 379706880. Its totient is φ = 100154880.

The previous prime is 225972577. The next prime is 225972583. The reversal of 225972578 is 875279522.

It is not an unprimeable number, because it can be changed into a prime (225972577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111026 + ... + 113042.

It is an arithmetic number, because the mean of its divisors is an integer number (11865840).

Almost surely, 2^225972578 is an apocalyptic number.

225972578 is a deficient number, since it is larger than the sum of its proper divisors (153734302).

225972578 is a wasteful number, since it uses less digits than its factorization.

225972578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its digits is 705600, while the sum is 47.

The square root of 225972578 is about 15032.3843085520. The cubic root of 225972578 is about 609.0952977792.

The spelling of 225972578 in words is "two hundred twenty-five million, nine hundred seventy-two thousand, five hundred seventy-eight".