168144825 has 36 divisors (see below), whose sum is σ = 282221520. Its totient is φ = 88331040.

The previous prime is 168144811. The next prime is 168144833. The reversal of 168144825 is 528441861.

It is not a de Polignac number, because 168144825 - 2⁵ = 168144793 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1209606 + ... + 1209744.

Almost surely, 2^168144825 is an apocalyptic number.

168144825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168144825 is a deficient number, since it is larger than the sum of its proper divisors (114076695).

168144825 is a wasteful number, since it uses less digits than its factorization.

168144825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 274 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 168144825 is about 12967.0669389805. The cubic root of 168144825 is about 551.9433457661.

The spelling of 168144825 in words is "one hundred sixty-eight million, one hundred forty-four thousand, eight hundred twenty-five".