165025605 has 8 divisors (see below), whose sum is σ = 264040992. Its totient is φ = 88013648.

The previous prime is 165025589. The next prime is 165025633. The reversal of 165025605 is 506520561.

165025605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 165025605 - 2⁴ = 165025589 is a prime.

It is a congruent 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, 5500839 + ... + 5500868.

It is an arithmetic number, because the mean of its divisors is an integer number (33005124).

Almost surely, 2^165025605 is an apocalyptic number.

165025605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165025605 is a deficient number, since it is larger than the sum of its proper divisors (99015387).

165025605 is a wasteful number, since it uses less digits than its factorization.

165025605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001715.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 165025605 is about 12846.2292132750. The cubic root of 165025605 is about 548.5090251843.

The spelling of 165025605 in words is "one hundred sixty-five million, twenty-five thousand, six hundred five".