212190325 has 6 divisors (see below), whose sum is σ = 263116034. Its totient is φ = 169752240.

The previous prime is 212190281. The next prime is 212190331. The reversal of 212190325 is 523091212.

It is a happy number.

212190325 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 4571044 + 207619281 = 2138^2 + 14409^2 .

It is not a de Polignac number, because 212190325 - 2¹⁵ = 212157557 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: 8487613 = 212190325 / (2 + 1 + 2 + 1 + 9 + 0 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212190325.

It is a congruent number.

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, 4243782 + ... + 4243831.

Almost surely, 2^212190325 is an apocalyptic number.

212190325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212190325 is a deficient number, since it is larger than the sum of its proper divisors (50925709).

212190325 is an equidigital number, since it uses as much as digits as its factorization.

212190325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487623 (or 8487618 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 212190325 is about 14566.7540996613. The cubic root of 212190325 is about 596.4515790322.

Subtracting from 212190325 its sum of digits (25), we obtain a triangular number (212190300 = T₂₀₆₀₀).

The spelling of 212190325 in words is "two hundred twelve million, one hundred ninety thousand, three hundred twenty-five".