100225 has 12 divisors (see below), whose sum is σ = 131440. Its totient is φ = 75600.

The previous prime is 100213. The next prime is 100237. The reversal of 100225 is 522001.

100225 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (100213) and next prime (100237).

It is not a de Polignac number, because 100225 - 2⁵ = 100193 is a prime.

100225 is a modest number, since divided by 225 gives 100 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370 + ... + 580.

2¹⁰⁰²²⁵ is an apocalyptic number.

It is an amenable number.

100225 is a deficient number, since it is larger than the sum of its proper divisors (31215).

100225 is a wasteful number, since it uses less digits than its factorization.

100225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 100225 is about 316.5833223655. The cubic root of 100225 is about 46.4506741760.

Adding to 100225 its reverse (522001), we get a palindrome (622226).

It can be divided in two parts, 100 and 225, that multiplied together give a square (22500 = 150²).

The spelling of 100225 in words is "one hundred thousand, two hundred twenty-five".