16524225 has 27 divisors (see below), whose sum is σ = 29706339. Its totient is φ = 8780400.

The previous prime is 16524223. The next prime is 16524247. The reversal of 16524225 is 52242561.

The square root of 16524225 is 4065.

It is a perfect power (a square), and thus also a powerful number.

16524225 is a `hidden beast` number, since 1 + 652 + 4 + 2 + 2 + 5 = 666.

16524225 is digitally balanced in base 2, 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 only one way, i.e., 5948721 + 10575504 = 2439^2 + 3252^2 .

It is not a de Polignac number, because 16524225 - 2¹ = 16524223 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16524223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60840 + ... + 61110.

Almost surely, 2^16524225 is an apocalyptic number.

16524225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16524225 is the 4065-th square number.

16524225 is the 2033-rd centered octagonal number.

It is an amenable number.

16524225 is a deficient number, since it is larger than the sum of its proper divisors (13182114).

16524225 is an equidigital number, since it uses as much as digits as its factorization.

16524225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 279 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The cubic root of 16524225 is about 254.7066985289.

Adding to 16524225 its reverse (52242561), we get a palindrome (68766786).

The spelling of 16524225 in words is "sixteen million, five hundred twenty-four thousand, two hundred twenty-five".