225213662655 has 16 divisors (see below), whose sum is σ = 400379844960. Its totient is φ = 120113953344.

The previous prime is 225213662651. The next prime is 225213662693. The reversal of 225213662655 is 556266312522.

225213662655 is a `hidden beast` number, since 2 + 2 + 5 + 2 + 13 + 6 + 626 + 5 + 5 = 666.

It is not a de Polignac number, because 225213662655 - 2² = 225213662651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 225213662655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225213662651) 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, 834124542 + ... + 834124811.

It is an arithmetic number, because the mean of its divisors is an integer number (25023740310).

Almost surely, 2^225213662655 is an apocalyptic number.

225213662655 is a deficient number, since it is larger than the sum of its proper divisors (175166182305).

225213662655 is a wasteful number, since it uses less digits than its factorization.

225213662655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668249367 (or 1668249361 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 225213662655 in words is "two hundred twenty-five billion, two hundred thirteen million, six hundred sixty-two thousand, six hundred fifty-five".