12775015 has 16 divisors (see below), whose sum is σ = 16796160. Its totient is φ = 9250720.

The previous prime is 12775013. The next prime is 12775031. The reversal of 12775015 is 51057721.

It is not a de Polignac number, because 12775015 - 2¹ = 12775013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775013) 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, 19422 + ... + 20068.

It is an arithmetic number, because the mean of its divisors is an integer number (1049760).

Almost surely, 2^12775015 is an apocalyptic number.

12775015 is a deficient number, since it is larger than the sum of its proper divisors (4021145).

12775015 is a wasteful number, since it uses less digits than its factorization.

12775015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 12775015 is about 3574.2152984956. The cubic root of 12775015 is about 233.7691187046.

It can be divided in two parts, 127750 and 15, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 12775015 in words is "twelve million, seven hundred seventy-five thousand, fifteen".