225028931598 has 56 divisors (see below), whose sum is σ = 508256384688. Its totient is φ = 74687601312.

The previous prime is 225028931597. The next prime is 225028931663. The reversal of 225028931598 is 895139820522.

It is a happy number.

225028931598 is a `hidden beast` number, since 2 + 2 + 502 + 89 + 3 + 1 + 59 + 8 = 666.

It is a super-2 number, since 2×225028931598² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225028931591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 8511 + ... + 670917.

Almost surely, 2^225028931598 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225028931598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254128192344).

225028931598 is an abundant number, since it is smaller than the sum of its proper divisors (283227453090).

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

225028931598 is an equidigital number, since it uses as much as digits as its factorization.

225028931598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662660 (or 662645 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 225028931598 in words is "two hundred twenty-five billion, twenty-eight million, nine hundred thirty-one thousand, five hundred ninety-eight".