210225225 has 24 divisors (see below), whose sum is σ = 397226560. Its totient is φ = 96102720.

The previous prime is 210225217. The next prime is 210225227. The reversal of 210225225 is 522522012.

It is not a de Polignac number, because 210225225 - 2³ = 210225217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (210225227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199690 + ... + 200739.

Almost surely, 2^210225225 is an apocalyptic number.

210225225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210225225 is a deficient number, since it is larger than the sum of its proper divisors (187001335).

210225225 is a wasteful number, since it uses less digits than its factorization.

210225225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400449 (or 400444 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 210225225 is about 14499.1456644866. The cubic root of 210225225 is about 594.6046145643.

Adding to 210225225 its reverse (522522012), we get a palindrome (732747237).

The spelling of 210225225 in words is "two hundred ten million, two hundred twenty-five thousand, two hundred twenty-five".