166156265 has 16 divisors (see below), whose sum is σ = 218013120. Its totient is φ = 120563520.

The previous prime is 166156229. The next prime is 166156267. The reversal of 166156265 is 562651661.

166156265 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 166156265 - 2¹⁸ = 165894121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166156267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22451 + ... + 28919.

It is an arithmetic number, because the mean of its divisors is an integer number (13625820).

Almost surely, 2^166156265 is an apocalyptic number.

It is an amenable number.

166156265 is a deficient number, since it is larger than the sum of its proper divisors (51856855).

166156265 is a wasteful number, since it uses less digits than its factorization.

166156265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952.

The product of its digits is 64800, while the sum is 38.

The square root of 166156265 is about 12890.1615583359. The cubic root of 166156265 is about 549.7588639914.

The spelling of 166156265 in words is "one hundred sixty-six million, one hundred fifty-six thousand, two hundred sixty-five".