166425087 has 8 divisors (see below), whose sum is σ = 234953136. Its totient is φ = 104423552.

The previous prime is 166425059. The next prime is 166425101. The reversal of 166425087 is 780524661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166425087 - 2⁶ = 166425023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166425037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631568 + ... + 1631669.

It is an arithmetic number, because the mean of its divisors is an integer number (29369142).

Almost surely, 2^166425087 is an apocalyptic number.

166425087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166425087 is a deficient number, since it is larger than the sum of its proper divisors (68528049).

166425087 is a wasteful number, since it uses less digits than its factorization.

166425087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263257.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 166425087 is about 12900.5847541885. The cubic root of 166425087 is about 550.0551867489.

The spelling of 166425087 in words is "one hundred sixty-six million, four hundred twenty-five thousand, eighty-seven".