225660811 has 8 divisors (see below), whose sum is σ = 234153344. Its totient is φ = 217244160.

The previous prime is 225660767. The next prime is 225660821. The reversal of 225660811 is 118066522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225660811 - 2⁷ = 225660683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225660821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12876 + ... + 24841.

It is an arithmetic number, because the mean of its divisors is an integer number (29269168).

Almost surely, 2^225660811 is an apocalyptic number.

225660811 is a deficient number, since it is larger than the sum of its proper divisors (8492533).

225660811 is a wasteful number, since it uses less digits than its factorization.

225660811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37941.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 225660811 is about 15022.0108840328. The cubic root of 225660811 is about 608.8150525485.

The spelling of 225660811 in words is "two hundred twenty-five million, six hundred sixty thousand, eight hundred eleven".