165006025 has 24 divisors (see below), whose sum is σ = 220414464. Its totient is φ = 122179200.

The previous prime is 165006019. The next prime is 165006031. The reversal of 165006025 is 520600561.

It is an interprime number because it is at equal distance from previous prime (165006019) and next prime (165006031).

It is not a de Polignac number, because 165006025 - 2¹¹ = 165003977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13197 + ... + 22453.

It is an arithmetic number, because the mean of its divisors is an integer number (9183936).

Almost surely, 2^165006025 is an apocalyptic number.

It is an amenable number.

165006025 is a deficient number, since it is larger than the sum of its proper divisors (55408439).

165006025 is a wasteful number, since it uses less digits than its factorization.

165006025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321 (or 9316 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 165006025 is about 12845.4670993312. The cubic root of 165006025 is about 548.4873311134.

Adding to 165006025 its reverse (520600561), we get a palindrome (685606586).

The spelling of 165006025 in words is "one hundred sixty-five million, six thousand, twenty-five".