168100225 has 12 divisors (see below), whose sum is σ = 208887424. Its totient is φ = 134194320.

The previous prime is 168100217. The next prime is 168100237. The reversal of 168100225 is 522001861.

It is not a de Polignac number, because 168100225 - 2³ = 168100217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168100225.

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, 5272 + ... + 19078.

Almost surely, 2^168100225 is an apocalyptic number.

It is an amenable number.

168100225 is a deficient number, since it is larger than the sum of its proper divisors (40787199).

168100225 is a wasteful number, since it uses less digits than its factorization.

168100225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304 (or 14299 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 168100225 is about 12965.3470836688. The cubic root of 168100225 is about 551.8945409138.

It can be divided in two parts, 168100 and 225, that multiplied together give a square (37822500 = 6150²).

The spelling of 168100225 in words is "one hundred sixty-eight million, one hundred thousand, two hundred twenty-five".