10209225 has 48 divisors (see below), whose sum is σ = 18734912. Its totient is φ = 4872960.

The previous prime is 10209209. The next prime is 10209229. The reversal of 10209225 is 52290201.

It is not a de Polignac number, because 10209225 - 2⁴ = 10209209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10209229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35934 + ... + 36216.

Almost surely, 2^10209225 is an apocalyptic number.

10209225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10209225 is a deficient number, since it is larger than the sum of its proper divisors (8525687).

10209225 is a wasteful number, since it uses less digits than its factorization.

10209225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10209225 is about 3195.1877879086. The cubic root of 10209225 is about 216.9356488382.

Adding to 10209225 its reverse (52290201), we get a palindrome (62499426).

The spelling of 10209225 in words is "ten million, two hundred nine thousand, two hundred twenty-five".