213352225 has 6 divisors (see below), whose sum is σ = 264556790. Its totient is φ = 170681760.

The previous prime is 213352213. The next prime is 213352229. The reversal of 213352225 is 522253312.

It can be written as a sum of positive squares in 3 ways, for example, as 63632529 + 149719696 = 7977^2 + 12236^2 .

It is not a de Polignac number, because 213352225 - 2¹⁷ = 213221153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 8534089 = 213352225 / (2 + 1 + 3 + 3 + 5 + 2 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 213352225.

It is not an unprimeable number, because it can be changed into a prime (213352229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4267020 + ... + 4267069.

Almost surely, 2^213352225 is an apocalyptic number.

213352225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213352225 is a deficient number, since it is larger than the sum of its proper divisors (51204565).

213352225 is an equidigital number, since it uses as much as digits as its factorization.

213352225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534099 (or 8534094 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 213352225 is about 14606.5815644866. The cubic root of 213352225 is about 597.5382701047.

The spelling of 213352225 in words is "two hundred thirteen million, three hundred fifty-two thousand, two hundred twenty-five".