225211284 has 36 divisors (see below), whose sum is σ = 569898420. Its totient is φ = 74989440.

The previous prime is 225211279. The next prime is 225211297. The reversal of 225211284 is 482112522.

It can be written as a sum of positive squares in 2 ways, for example, as 114961284 + 110250000 = 10722^2 + 10500^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 37104 + ... + 42744.

Almost surely, 2^225211284 is an apocalyptic number.

It is an amenable number.

225211284 is an abundant number, since it is smaller than the sum of its proper divisors (344687136).

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

225211284 is a wasteful number, since it uses less digits than its factorization.

225211284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760 (or 6755 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 225211284 is about 15007.0411474081. The cubic root of 225211284 is about 608.4105210287.

The spelling of 225211284 in words is "two hundred twenty-five million, two hundred eleven thousand, two hundred eighty-four".