225999578 has 8 divisors (see below), whose sum is σ = 387427872. Its totient is φ = 96856956.

The previous prime is 225999577. The next prime is 225999583. The reversal of 225999578 is 875999522.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225999577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8071400 + ... + 8071427.

It is an arithmetic number, because the mean of its divisors is an integer number (48428484).

Almost surely, 2^225999578 is an apocalyptic number.

225999578 is a deficient number, since it is larger than the sum of its proper divisors (161428294).

225999578 is a wasteful number, since it uses less digits than its factorization.

225999578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142836.

The product of its digits is 4082400, while the sum is 56.

The square root of 225999578 is about 15033.2823428551. The cubic root of 225999578 is about 609.1195557640.

Subtracting from 225999578 its sum of digits (56), we obtain a palindrome (225999522).

The spelling of 225999578 in words is "two hundred twenty-five million, nine hundred ninety-nine thousand, five hundred seventy-eight".