225310000 has 50 divisors (see below), whose sum is σ = 545522252. Its totient is φ = 90120000.

The previous prime is 225309949. The next prime is 225310013. The reversal of 225310000 is 13522.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×225310000² = 101529192200000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1266 + ... + 21265.

Almost surely, 2^225310000 is an apocalyptic number.

225310000 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 225310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272761126).

225310000 is an abundant number, since it is smaller than the sum of its proper divisors (320212252).

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

225310000 is an equidigital number, since it uses as much as digits as its factorization.

225310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22559 (or 22538 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 225310000 is about 15010.3297765239. The cubic root of 225310000 is about 608.4994021285.

Adding to 225310000 its reverse (13522), we get a palindrome (225323522).

The spelling of 225310000 in words is "two hundred twenty-five million, three hundred ten thousand".