216525452 has 48 divisors (see below), whose sum is σ = 459561984. Its totient is φ = 87912000.

The previous prime is 216525433. The next prime is 216525461. The reversal of 216525452 is 254525612.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11627 + ... + 23837.

It is an arithmetic number, because the mean of its divisors is an integer number (9574208).

Almost surely, 2^216525452 is an apocalyptic number.

216525452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216525452 is an abundant number, since it is smaller than the sum of its proper divisors (243036532).

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

216525452 is a wasteful number, since it uses less digits than its factorization.

216525452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270 (or 12268 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 216525452 is about 14714.8038383119. The cubic root of 216525452 is about 600.4861356435.

The spelling of 216525452 in words is "two hundred sixteen million, five hundred twenty-five thousand, four hundred fifty-two".