210225 has 12 divisors (see below), whose sum is σ = 347696. Its totient is φ = 112080.

The previous prime is 210209. The next prime is 210229. The reversal of 210225 is 522012.

210225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210225 - 2⁴ = 210209 is a prime.

It is an Ulam number.

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 210225.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 210225.

It is not an unprimeable number, because it can be changed into a prime (210229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1327 + ... + 1476.

2²¹⁰²²⁵ is an apocalyptic number.

210225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210225 is a deficient number, since it is larger than the sum of its proper divisors (137471).

210225 is a wasteful number, since it uses less digits than its factorization.

210225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816 (or 2811 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 210225 is about 458.5029988997. The cubic root of 210225 is about 59.4604402433.

Adding to 210225 its reverse (522012), we get a palindrome (732237).

It can be divided in two parts, 210 and 225, that added together give a triangular number (435 = T₂₉).

The spelling of 210225 in words is "two hundred ten thousand, two hundred twenty-five".