225661227273 has 12 divisors (see below), whose sum is σ = 330820108528. Its totient is φ = 148195432440.

The previous prime is 225661227271. The next prime is 225661227343. The reversal of 225661227273 is 372722166522.

225661227273 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 612 + 2 + 7 + 27 + 3 = 666.

It is not a de Polignac number, because 225661227273 - 2¹ = 225661227271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225661227271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187114843 + ... + 187116048.

Almost surely, 2^225661227273 is an apocalyptic number.

It is an amenable number.

225661227273 is a deficient number, since it is larger than the sum of its proper divisors (105158881255).

225661227273 is a wasteful number, since it uses less digits than its factorization.

225661227273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374230964 (or 374230961 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 225661227273 in words is "two hundred twenty-five billion, six hundred sixty-one million, two hundred twenty-seven thousand, two hundred seventy-three".