210549225 has 12 divisors (see below), whose sum is σ = 348108176. Its totient is φ = 112292880.

The previous prime is 210549221. The next prime is 210549239. The reversal of 210549225 is 522945012.

It is not a de Polignac number, because 210549225 - 2² = 210549221 is a prime.

It is a super-2 number, since 2×210549225² = 88661952296201250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210549192 and 210549201.

It is not an unprimeable number, because it can be changed into a prime (210549221) 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, 1403587 + ... + 1403736.

Almost surely, 2^210549225 is an apocalyptic number.

210549225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210549225 is a deficient number, since it is larger than the sum of its proper divisors (137558951).

210549225 is a wasteful number, since it uses less digits than its factorization.

210549225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807336 (or 2807331 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 210549225 is about 14510.3144349115. The cubic root of 210549225 is about 594.9099268119.

The spelling of 210549225 in words is "two hundred ten million, five hundred forty-nine thousand, two hundred twenty-five".