216025117 has 32 divisors (see below), whose sum is σ = 285696000. Its totient is φ = 158241600.

The previous prime is 216025109. The next prime is 216025123. The reversal of 216025117 is 711520612.

It is not a de Polignac number, because 216025117 - 2³ = 216025109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216025091 and 216025100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216025127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217492 + ... + 218482.

It is an arithmetic number, because the mean of its divisors is an integer number (8928000).

Almost surely, 2^216025117 is an apocalyptic number.

It is an amenable number.

216025117 is a deficient number, since it is larger than the sum of its proper divisors (69670883).

216025117 is a wasteful number, since it uses less digits than its factorization.

216025117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 216025117 is about 14697.7929295524. The cubic root of 216025117 is about 600.0232555801.

Adding to 216025117 its reverse (711520612), we get a palindrome (927545729).

The spelling of 216025117 in words is "two hundred sixteen million, twenty-five thousand, one hundred seventeen".