1255232165 has 16 divisors (see below), whose sum is σ = 1644644736. Its totient is φ = 912100800.

The previous prime is 1255232161. The next prime is 1255232177. The reversal of 1255232165 is 5612325521.

It is not a de Polignac number, because 1255232165 - 2² = 1255232161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255232161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57935 + ... + 76595.

It is an arithmetic number, because the mean of its divisors is an integer number (102790296).

Almost surely, 2^1255232165 is an apocalyptic number.

It is an amenable number.

1255232165 is a deficient number, since it is larger than the sum of its proper divisors (389412571).

1255232165 is a wasteful number, since it uses less digits than its factorization.

1255232165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19900.

The product of its digits is 18000, while the sum is 32.

The square root of 1255232165 is about 35429.2557782407. The cubic root of 1255232165 is about 1078.7182338909.

Adding to 1255232165 its reverse (5612325521), we get a palindrome (6867557686).

The spelling of 1255232165 in words is "one billion, two hundred fifty-five million, two hundred thirty-two thousand, one hundred sixty-five".