12052405 has 8 divisors (see below), whose sum is σ = 15313752. Its totient is φ = 9074688.

The previous prime is 12052399. The next prime is 12052409. The reversal of 12052405 is 50425021.

12052405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1825201 + 10227204 = 1351^2 + 3198^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12052405 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 (12052409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70812 + ... + 70981.

It is an arithmetic number, because the mean of its divisors is an integer number (1914219).

Almost surely, 2^12052405 is an apocalyptic number.

It is an amenable number.

12052405 is a deficient number, since it is larger than the sum of its proper divisors (3261347).

12052405 is a wasteful number, since it uses less digits than its factorization.

12052405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141815.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12052405 is about 3471.6573851692. The cubic root of 12052405 is about 229.2756353765.

Adding to 12052405 its reverse (50425021), we get a palindrome (62477426).

It can be divided in two parts, 120 and 52405, that added together give a palindrome (52525).

The spelling of 12052405 in words is "twelve million, fifty-two thousand, four hundred five".