165025522 has 4 divisors (see below), whose sum is σ = 247538286. Its totient is φ = 82512760.

The previous prime is 165025519. The next prime is 165025541. The reversal of 165025522 is 225520561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156725361 + 8300161 = 12519^2 + 2881^2 .

It is a super-2 number, since 2×165025522² = 54466845822744968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41256379 + ... + 41256382.

Almost surely, 2^165025522 is an apocalyptic number.

165025522 is a deficient number, since it is larger than the sum of its proper divisors (82512764).

165025522 is an equidigital number, since it uses as much as digits as its factorization.

165025522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82512763.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 165025522 is about 12846.2259827546. The cubic root of 165025522 is about 548.5089332263.

It can be divided in two parts, 1650 and 25522, that added together give a palindrome (27172).

The spelling of 165025522 in words is "one hundred sixty-five million, twenty-five thousand, five hundred twenty-two".