168610225 has 45 divisors (see below), whose sum is σ = 248597153. Its totient is φ = 113436960.

The previous prime is 168610213. The next prime is 168610241. The reversal of 168610225 is 522016861.

The square root of 168610225 is 12985.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1270129 + 167340096 = 1127^2 + 12936^2 .

It is not a de Polignac number, because 168610225 - 2¹⁷ = 168479153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3181299 + ... + 3181351.

Almost surely, 2^168610225 is an apocalyptic number.

168610225 is the 12985-th square number.

168610225 is the 6493-rd centered octagonal number.

It is an amenable number.

168610225 is a deficient number, since it is larger than the sum of its proper divisors (79986928).

168610225 is an frugal number, since it uses more digits than its factorization.

168610225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The cubic root of 168610225 is about 552.4521091690.

It can be divided in two parts, 1686 and 10225, that added together give a palindrome (11911).

The spelling of 168610225 in words is "one hundred sixty-eight million, six hundred ten thousand, two hundred twenty-five".