225911530 has 32 divisors (see below), whose sum is σ = 440386128. Its totient is φ = 82944000.

The previous prime is 225911527. The next prime is 225911533. The reversal of 225911530 is 35119522.

It is an interprime number because it is at equal distance from previous prime (225911527) and next prime (225911533).

It can be written as a sum of positive squares in 8 ways, for example, as 22934521 + 202977009 = 4789^2 + 14247^2 .

It is not an unprimeable number, because it can be changed into a prime (225911533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18730 + ... + 28330.

Almost surely, 2^225911530 is an apocalyptic number.

225911530 is a deficient number, since it is larger than the sum of its proper divisors (214474598).

225911530 is a wasteful number, since it uses less digits than its factorization.

225911530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9802.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 225911530 is about 15030.3536219212. The cubic root of 225911530 is about 609.0404424525.

The spelling of 225911530 in words is "two hundred twenty-five million, nine hundred eleven thousand, five hundred thirty".