166751325 has 96 divisors (see below), whose sum is σ = 341089280. Its totient is φ = 79315200.

The previous prime is 166751323. The next prime is 166751327. The reversal of 166751325 is 523157661.

It is an interprime number because it is at equal distance from previous prime (166751323) and next prime (166751327).

It is not a de Polignac number, because 166751325 - 2¹ = 166751323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166751325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166751323) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 271719 + ... + 272331.

Almost surely, 2^166751325 is an apocalyptic number.

166751325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166751325 is an abundant number, since it is smaller than the sum of its proper divisors (174337955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166751325 is a wasteful number, since it uses less digits than its factorization.

166751325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 665 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 166751325 is about 12913.2228742479. Note that the first 3 decimals coincide. The cubic root of 166751325 is about 550.4143709294.

The spelling of 166751325 in words is "one hundred sixty-six million, seven hundred fifty-one thousand, three hundred twenty-five".