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225610717 = 2153104789
BaseRepresentation
bin11010111001010…
…00101111011101
3120201112012201111
431130220233131
5430224020332
634215342021
75406442123
oct1534505735
9521465644
10225610717
11106395742
1263681911
1337983487
1421d6b913
1514c17947
hexd728bdd

225610717 has 4 divisors (see below), whose sum is σ = 225717660. Its totient is φ = 225503776.

The previous prime is 225610711. The next prime is 225610729. The reversal of 225610717 is 717016522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 717016522 = 2358508261.

It can be written as a sum of positive squares in 2 ways, for example, as 8608356 + 217002361 = 2934^2 + 14731^2 .

It is a cyclic number.

It is not a de Polignac number, because 225610717 - 27 = 225610589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225610711) 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 3 ways as a sum of consecutive naturals, for example, 50242 + ... + 54547.

It is an arithmetic number, because the mean of its divisors is an integer number (56429415).

Almost surely, 2225610717 is an apocalyptic number.

It is an amenable number.

225610717 is a deficient number, since it is larger than the sum of its proper divisors (106943).

225610717 is a wasteful number, since it uses less digits than its factorization.

225610717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106942.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 225610717 is about 15020.3434381508. The cubic root of 225610717 is about 608.7699993289.

The spelling of 225610717 in words is "two hundred twenty-five million, six hundred ten thousand, seven hundred seventeen".

Divisors: 1 2153 104789 225610717