225650661 has 8 divisors (see below), whose sum is σ = 301721280. Its totient is φ = 150006912.

The previous prime is 225650641. The next prime is 225650681. The reversal of 225650661 is 166056522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (225650641) and next prime (225650681).

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

It is not a de Polignac number, because 225650661 - 2⁷ = 225650533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225650611) 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, 105481 + ... + 107598.

It is an arithmetic number, because the mean of its divisors is an integer number (37715160).

Almost surely, 2^225650661 is an apocalyptic number.

It is an amenable number.

225650661 is a deficient number, since it is larger than the sum of its proper divisors (76070619).

225650661 is a wasteful number, since it uses less digits than its factorization.

225650661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213435.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 225650661 is about 15021.6730426408. The cubic root of 225650661 is about 608.8059244455.

The spelling of 225650661 in words is "two hundred twenty-five million, six hundred fifty thousand, six hundred sixty-one".