10128225 has 12 divisors (see below), whose sum is σ = 16745456. Its totient is φ = 5401680.

The previous prime is 10128199. The next prime is 10128229. The reversal of 10128225 is 52282101.

It is a happy number.

It is not a de Polignac number, because 10128225 - 2⁵ = 10128193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10128229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67447 + ... + 67596.

Almost surely, 2^10128225 is an apocalyptic number.

10128225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10128225 is a deficient number, since it is larger than the sum of its proper divisors (6617231).

10128225 is a wasteful number, since it uses less digits than its factorization.

10128225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135056 (or 135051 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10128225 is about 3182.4872348526. The cubic root of 10128225 is about 216.3604022677.

The spelling of 10128225 in words is "ten million, one hundred twenty-eight thousand, two hundred twenty-five".