225639240177 has 160 divisors (see below), whose sum is σ = 376400977920. Its totient is φ = 119359319040.

The previous prime is 225639240163. The next prime is 225639240193. The reversal of 225639240177 is 771042936522.

It is not a de Polignac number, because 225639240177 - 2⁷ = 225639240049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225639240677) 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 159 ways as a sum of consecutive naturals, for example, 857943748 + ... + 857944010.

It is an arithmetic number, because the mean of its divisors is an integer number (2352506112).

Almost surely, 2^225639240177 is an apocalyptic number.

It is an amenable number.

225639240177 is a deficient number, since it is larger than the sum of its proper divisors (150761737743).

225639240177 is a wasteful number, since it uses less digits than its factorization.

225639240177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 225639240177 in words is "two hundred twenty-five billion, six hundred thirty-nine million, two hundred forty thousand, one hundred seventy-seven".