212530225 has 6 divisors (see below), whose sum is σ = 263537510. Its totient is φ = 170024160.

The previous prime is 212530211. The next prime is 212530237. The reversal of 212530225 is 522035212.

212530225 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 3 ways, for example, as 303601 + 212226624 = 551^2 + 14568^2 .

It is not a de Polignac number, because 212530225 - 2¹¹ = 212528177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212530196 and 212530205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4250580 + ... + 4250629.

Almost surely, 2^212530225 is an apocalyptic number.

212530225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212530225 is a deficient number, since it is larger than the sum of its proper divisors (51007285).

212530225 is an equidigital number, since it uses as much as digits as its factorization.

212530225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501219 (or 8501214 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 212530225 is about 14578.4164091989. The cubic root of 212530225 is about 596.7698871945.

Adding to 212530225 its reverse (522035212), we get a palindrome (734565437).

The spelling of 212530225 in words is "two hundred twelve million, five hundred thirty thousand, two hundred twenty-five".