165225427 has 2 divisors, whose sum is σ = 165225428. Its totient is φ = 165225426.

The previous prime is 165225421. The next prime is 165225451. The reversal of 165225427 is 724522561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165225427 - 2¹¹ = 165223379 is a prime.

It is equal to p_9250855 and since 165225427 and 9250855 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 165225392 and 165225401.

It is not a weakly prime, because it can be changed into another prime (165225421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82612713 + 82612714.

It is an arithmetic number, because the mean of its divisors is an integer number (82612714).

Almost surely, 2^165225427 is an apocalyptic number.

165225427 is a deficient number, since it is larger than the sum of its proper divisors (1).

165225427 is an equidigital number, since it uses as much as digits as its factorization.

165225427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 165225427 is about 12854.0043177214. The cubic root of 165225427 is about 548.7303240991.

Adding to 165225427 its reverse (724522561), we get a palindrome (889747988).

The spelling of 165225427 in words is "one hundred sixty-five million, two hundred twenty-five thousand, four hundred twenty-seven".