216525316 has 36 divisors (see below), whose sum is σ = 441670656. Its totient is φ = 92610000.

The previous prime is 216525293. The next prime is 216525317. The reversal of 216525316 is 613525612.

216525316 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216525317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146461 + ... + 147931.

Almost surely, 2^216525316 is an apocalyptic number.

It is an amenable number.

216525316 is an abundant number, since it is smaller than the sum of its proper divisors (225145340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216525316 is a wasteful number, since it uses less digits than its factorization.

216525316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2231 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 216525316 is about 14714.7992171147. The cubic root of 216525316 is about 600.4860099213.

The spelling of 216525316 in words is "two hundred sixteen million, five hundred twenty-five thousand, three hundred sixteen".