225659800 has 24 divisors (see below), whose sum is σ = 524659500. Its totient is φ = 90263840.

The previous prime is 225659783. The next prime is 225659807. The reversal of 225659800 is 8956522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225659800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225659807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563950 + ... + 564349.

Almost surely, 2^225659800 is an apocalyptic number.

225659800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225659800 is an abundant number, since it is smaller than the sum of its proper divisors (298999700).

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

225659800 is a wasteful number, since it uses less digits than its factorization.

225659800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128315 (or 1128306 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 225659800 is about 15021.9772333738. The cubic root of 225659800 is about 608.8141433478.

The spelling of 225659800 in words is "two hundred twenty-five million, six hundred fifty-nine thousand, eight hundred".