216425612 has 24 divisors (see below), whose sum is σ = 408777600. Its totient is φ = 99668736.

The previous prime is 216425591. The next prime is 216425669. The reversal of 216425612 is 216524612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20564 + ... + 29252.

It is an arithmetic number, because the mean of its divisors is an integer number (17032400).

Almost surely, 2^216425612 is an apocalyptic number.

It is an amenable number.

216425612 is a deficient number, since it is larger than the sum of its proper divisors (192351988).

216425612 is a wasteful number, since it uses less digits than its factorization.

216425612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185 (or 9183 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 216425612 is about 14711.4109452493. The cubic root of 216425612 is about 600.3938266296.

The spelling of 216425612 in words is "two hundred sixteen million, four hundred twenty-five thousand, six hundred twelve".