30636225 has 63 divisors (see below), whose sum is σ = 58380409. Its totient is φ = 15940800.

The previous prime is 30636223. The next prime is 30636257. The reversal of 30636225 is 52263603.

The square root of 30636225 is 5535.

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

30636225 is a `hidden beast` number, since 3 + 0 + 636 + 2 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12895281 + 17740944 = 3591^2 + 4212^2 .

It is not a de Polignac number, because 30636225 - 2¹ = 30636223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30636223) by changing a digit.

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 62 ways as a sum of consecutive naturals, for example, 747205 + ... + 747245.

Almost surely, 2^30636225 is an apocalyptic number.

30636225 is the 5535-th square number.

30636225 is the 2768-th centered octagonal number.

It is an amenable number.

30636225 is a deficient number, since it is larger than the sum of its proper divisors (27744184).

30636225 is an frugal number, since it uses more digits than its factorization.

30636225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The cubic root of 30636225 is about 312.9044576324.

Adding to 30636225 its reverse (52263603), we get a palindrome (82899828).

The spelling of 30636225 in words is "thirty million, six hundred thirty-six thousand, two hundred twenty-five".