168607225 has 6 divisors (see below), whose sum is σ = 209072990. Its totient is φ = 134885760.

The previous prime is 168607223. The next prime is 168607249. The reversal of 168607225 is 522706861.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5253264 + 163353961 = 2292^2 + 12781^2 .

It is not a de Polignac number, because 168607225 - 2¹ = 168607223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168607223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3372120 + ... + 3372169.

Almost surely, 2^168607225 is an apocalyptic number.

It is an amenable number.

168607225 is a deficient number, since it is larger than the sum of its proper divisors (40465765).

168607225 is an equidigital number, since it uses as much as digits as its factorization.

168607225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744299 (or 6744294 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 168607225 is about 12984.8844815809. The cubic root of 168607225 is about 552.4488326454.

The spelling of 168607225 in words is "one hundred sixty-eight million, six hundred seven thousand, two hundred twenty-five".