225603631755 has 32 divisors (see below), whose sum is σ = 401274240000. Its totient is φ = 120261602016.

The previous prime is 225603631709. The next prime is 225603631787. The reversal of 225603631755 is 557136306522.

225603631755 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 0 + 3 + 631 + 7 + 5 + 5 = 666.

It is not a de Polignac number, because 225603631755 - 2¹⁰ = 225603630731 is a prime.

It is a super-2 number, since 2×225603631755² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 225603631755.

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 31 ways as a sum of consecutive naturals, for example, 148129 + ... + 687858.

It is an arithmetic number, because the mean of its divisors is an integer number (12539820000).

Almost surely, 2^225603631755 is an apocalyptic number.

225603631755 is a deficient number, since it is larger than the sum of its proper divisors (175670608245).

225603631755 is a wasteful number, since it uses less digits than its factorization.

225603631755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838000 (or 837994 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 225603631755 in words is "two hundred twenty-five billion, six hundred three million, six hundred thirty-one thousand, seven hundred fifty-five".