165225025234 has 16 divisors (see below), whose sum is σ = 250202763000. Its totient is φ = 81826791424.

The previous prime is 165225025223. The next prime is 165225025237. The reversal of 165225025234 is 432520522561.

It can be written as a sum of positive squares in 4 ways, for example, as 142503985009 + 22721040225 = 377497^2 + 150735^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165225025193 and 165225025202.

It is not an unprimeable number, because it can be changed into a prime (165225025237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548479 + ... + 794530.

Almost surely, 2^165225025234 is an apocalyptic number.

165225025234 is a deficient number, since it is larger than the sum of its proper divisors (84977737766).

165225025234 is a wasteful number, since it uses less digits than its factorization.

165225025234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343597.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 165225025234 its reverse (432520522561), we get a palindrome (597745547795).

The spelling of 165225025234 in words is "one hundred sixty-five billion, two hundred twenty-five million, twenty-five thousand, two hundred thirty-four".