225200000 has 96 divisors (see below), whose sum is σ = 561760920. Its totient is φ = 89920000.

The previous prime is 225199981. The next prime is 225200033. The reversal of 225200000 is 2522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399719 + ... + 400281.

Almost surely, 2^225200000 is an apocalyptic number.

225200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280880460).

225200000 is an abundant number, since it is smaller than the sum of its proper divisors (336560920).

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

225200000 is an frugal number, since it uses more digits than its factorization.

225200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 225200000 is about 15006.6651858433. The cubic root of 225200000 is about 608.4003595796.

Adding to 225200000 its reverse (2522), we get a palindrome (225202522).

The spelling of 225200000 in words is "two hundred twenty-five million, two hundred thousand".