225994665 has 64 divisors (see below), whose sum is σ = 416586240. Its totient is φ = 103741440.

The previous prime is 225994663. The next prime is 225994687. The reversal of 225994665 is 566499522.

It is not a de Polignac number, because 225994665 - 2¹ = 225994663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225994661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183271 + ... + 184499.

It is an arithmetic number, because the mean of its divisors is an integer number (6509160).

Almost surely, 2^225994665 is an apocalyptic number.

It is an amenable number.

225994665 is a deficient number, since it is larger than the sum of its proper divisors (190591575).

225994665 is a wasteful number, since it uses less digits than its factorization.

225994665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314.

The product of its digits is 1166400, while the sum is 48.

The square root of 225994665 is about 15033.1189378652. The cubic root of 225994665 is about 609.1151418530.

The spelling of 225994665 in words is "two hundred twenty-five million, nine hundred ninety-four thousand, six hundred sixty-five".