225215330 has 8 divisors (see below), whose sum is σ = 405387612. Its totient is φ = 90086128.

The previous prime is 225215327. The next prime is 225215339. The reversal of 225215330 is 33512522.

It can be written as a sum of positive squares in 2 ways, for example, as 207734569 + 17480761 = 14413^2 + 4181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225215296 and 225215305.

It is not an unprimeable number, because it can be changed into a prime (225215339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11260757 + ... + 11260776.

Almost surely, 2^225215330 is an apocalyptic number.

225215330 is a deficient number, since it is larger than the sum of its proper divisors (180172282).

225215330 is a wasteful number, since it uses less digits than its factorization.

225215330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22521540.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 225215330 is about 15007.1759501913. The cubic root of 225215330 is about 608.4141644433.

Adding to 225215330 its reverse (33512522), we get a palindrome (258727852).

The spelling of 225215330 in words is "two hundred twenty-five million, two hundred fifteen thousand, three hundred thirty".