225138294 has 12 divisors (see below), whose sum is σ = 487799676. Its totient is φ = 75046092.

The previous prime is 225138253. The next prime is 225138299. The reversal of 225138294 is 492831522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225138299) 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 5 ways as a sum of consecutive naturals, for example, 6253824 + ... + 6253859.

It is an arithmetic number, because the mean of its divisors is an integer number (40649973).

Almost surely, 2^225138294 is an apocalyptic number.

225138294 is an abundant number, since it is smaller than the sum of its proper divisors (262661382).

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

225138294 is a wasteful number, since it uses less digits than its factorization.

225138294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507691 (or 12507688 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 225138294 is about 15004.6090918757. The cubic root of 225138294 is about 608.3447861900.

The spelling of 225138294 in words is "two hundred twenty-five million, one hundred thirty-eight thousand, two hundred ninety-four".