216525074 has 8 divisors (see below), whose sum is σ = 328437180. Its totient is φ = 107046016.

The previous prime is 216525061. The next prime is 216525077. The reversal of 216525074 is 470525612.

216525074 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 195300625 + 21224449 = 13975^2 + 4607^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 216525074.

It is not an unprimeable number, because it can be changed into a prime (216525077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608039 + ... + 608394.

Almost surely, 2^216525074 is an apocalyptic number.

216525074 is a deficient number, since it is larger than the sum of its proper divisors (111912106).

216525074 is a wasteful number, since it uses less digits than its factorization.

216525074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216524.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 216525074 is about 14714.7909940984. The cubic root of 216525074 is about 600.4857862097.

The spelling of 216525074 in words is "two hundred sixteen million, five hundred twenty-five thousand, seventy-four".