225909877138 has 12 divisors (see below), whose sum is σ = 372471244110. Its totient is φ = 102686307680.

The previous prime is 225909877033. The next prime is 225909877147. The reversal of 225909877138 is 831778909522.

It can be written as a sum of positive squares in only one way, i.e., 225888226729 + 21650409 = 475277^2 + 4653^2 .

It is an unprimeable number.

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, 466755703 + ... + 466756186.

Almost surely, 2^225909877138 is an apocalyptic number.

225909877138 is a deficient number, since it is larger than the sum of its proper divisors (146561366972).

225909877138 is a wasteful number, since it uses less digits than its factorization.

225909877138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933511913 (or 933511902 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 225909877138 in words is "two hundred twenty-five billion, nine hundred nine million, eight hundred seventy-seven thousand, one hundred thirty-eight".