225994989605 has 48 divisors (see below), whose sum is σ = 355251432960. Its totient is φ = 136335427200.

The previous prime is 225994989587. The next prime is 225994989707. The reversal of 225994989605 is 506989499522.

It is not a de Polignac number, because 225994989605 - 2¹⁰ = 225994988581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1268990 + ... + 1436079.

It is an arithmetic number, because the mean of its divisors is an integer number (7401071520).

Almost surely, 2^225994989605 is an apocalyptic number.

It is an amenable number.

225994989605 is a deficient number, since it is larger than the sum of its proper divisors (129256443355).

225994989605 is a wasteful number, since it uses less digits than its factorization.

225994989605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705130 (or 2705123 counting only the distinct ones).

The product of its (nonzero) digits is 125971200, while the sum is 68.

The spelling of 225994989605 in words is "two hundred twenty-five billion, nine hundred ninety-four million, nine hundred eighty-nine thousand, six hundred five".