158265 has 12 divisors (see below), whose sum is σ = 274404. Its totient is φ = 84384.

The previous prime is 158261. The next prime is 158269. The reversal of 158265 is 562851.

158265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (158261) and next prime (158269).

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 45369 = 336^2 + 213^2 .

It is not a de Polignac number, because 158265 - 2² = 158261 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1714 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (22867).

2¹⁵⁸²⁶⁵ is an apocalyptic number.

158265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158265 is a deficient number, since it is larger than the sum of its proper divisors (116139).

158265 is a wasteful number, since it uses less digits than its factorization.

158265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528 (or 3525 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 158265 is about 397.8253385595. The cubic root of 158265 is about 54.0914089654.

The spelling of 158265 in words is "one hundred fifty-eight thousand, two hundred sixty-five".