166025155 has 8 divisors (see below), whose sum is σ = 207892512. Its totient is φ = 127045248.

The previous prime is 166025147. The next prime is 166025161. The reversal of 166025155 is 551520661.

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 166025155 - 2³ = 166025147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721734 + ... + 721963.

It is an arithmetic number, because the mean of its divisors is an integer number (25986564).

Almost surely, 2^166025155 is an apocalyptic number.

166025155 is a deficient number, since it is larger than the sum of its proper divisors (41867357).

166025155 is a wasteful number, since it uses less digits than its factorization.

166025155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443725.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 166025155 is about 12885.0748930691. The cubic root of 166025155 is about 549.6142253454.

The spelling of 166025155 in words is "one hundred sixty-six million, twenty-five thousand, one hundred fifty-five".