225211000 has 64 divisors (see below), whose sum is σ = 602297280. Its totient is φ = 77212800.

The previous prime is 225210983. The next prime is 225211031. The reversal of 225211000 is 112522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9087 + ... + 23086.

It is an arithmetic number, because the mean of its divisors is an integer number (9410895).

Almost surely, 2^225211000 is an apocalyptic number.

225211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225211000 is an abundant number, since it is smaller than the sum of its proper divisors (377086280).

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

225211000 is a wasteful number, since it uses less digits than its factorization.

225211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32201 (or 32187 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 225211000 is about 15007.0316851801. The cubic root of 225211000 is about 608.4102652856.

Adding to 225211000 its reverse (112522), we get a palindrome (225323522).

The spelling of 225211000 in words is "two hundred twenty-five million, two hundred eleven thousand".