12785155 has 8 divisors (see below), whose sum is σ = 15483600. Its totient is φ = 10133856.

The previous prime is 12785131. The next prime is 12785189. The reversal of 12785155 is 55158721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12785155 - 2⁹ = 12784643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12785155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11185 + ... + 12274.

It is an arithmetic number, because the mean of its divisors is an integer number (1935450).

Almost surely, 2^12785155 is an apocalyptic number.

12785155 is a deficient number, since it is larger than the sum of its proper divisors (2698445).

12785155 is a wasteful number, since it uses less digits than its factorization.

12785155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573.

The product of its digits is 14000, while the sum is 34.

The square root of 12785155 is about 3575.6335103028. The cubic root of 12785155 is about 233.8309527345.

The spelling of 12785155 in words is "twelve million, seven hundred eighty-five thousand, one hundred fifty-five".