12755905 has 8 divisors (see below), whose sum is σ = 15328872. Its totient is φ = 10190208.

The previous prime is 12755903. The next prime is 12755909. The reversal of 12755905 is 50955721.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 12730624 = 159^2 + 3568^2 .

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 12755905 - 2¹ = 12755903 is a prime.

It is a super-2 number, since 2×12755905² = 325426224738050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12755903) 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, 3427 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (1916109).

Almost surely, 2^12755905 is an apocalyptic number.

It is an amenable number.

12755905 is a deficient number, since it is larger than the sum of its proper divisors (2572967).

12755905 is an equidigital number, since it uses as much as digits as its factorization.

12755905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 12755905 is about 3571.5409839452. The cubic root of 12755905 is about 233.6524963431.

The spelling of 12755905 in words is "twelve million, seven hundred fifty-five thousand, nine hundred five".