225994138 has 8 divisors (see below), whose sum is σ = 340075188. Its totient is φ = 112635744.

The previous prime is 225994103. The next prime is 225994147. The reversal of 225994138 is 831499522.

It can be written as a sum of positive squares in 2 ways, for example, as 131262849 + 94731289 = 11457^2 + 9733^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 225994094 and 225994103.

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, 179881 + ... + 181132.

Almost surely, 2^225994138 is an apocalyptic number.

225994138 is a deficient number, since it is larger than the sum of its proper divisors (114081050).

225994138 is a wasteful number, since it uses less digits than its factorization.

225994138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361328.

The product of its digits is 155520, while the sum is 43.

The square root of 225994138 is about 15033.1014098888. The cubic root of 225994138 is about 609.1146683847.

The spelling of 225994138 in words is "two hundred twenty-five million, nine hundred ninety-four thousand, one hundred thirty-eight".