165265015 has 8 divisors (see below), whose sum is σ = 199832688. Its totient is φ = 131202240.

The previous prime is 165265013. The next prime is 165265033. The reversal of 165265015 is 510562561.

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

It is not a de Polignac number, because 165265015 - 2¹ = 165265013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165265013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125502 + ... + 126811.

It is an arithmetic number, because the mean of its divisors is an integer number (24979086).

Almost surely, 2^165265015 is an apocalyptic number.

165265015 is a deficient number, since it is larger than the sum of its proper divisors (34567673).

165265015 is a wasteful number, since it uses less digits than its factorization.

165265015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252449.

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

The square root of 165265015 is about 12855.5441347304. The cubic root of 165265015 is about 548.7741458477.

The spelling of 165265015 in words is "one hundred sixty-five million, two hundred sixty-five thousand, fifteen".