12427505 has 8 divisors (see below), whose sum is σ = 15230592. Its totient is φ = 9730288.

The previous prime is 12427489. The next prime is 12427511. The reversal of 12427505 is 50572421.

12427505 = 53² + 54² + ... + 334².

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 12427505 - 2⁴ = 12427489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26207 + ... + 26676.

It is an arithmetic number, because the mean of its divisors is an integer number (1903824).

Almost surely, 2^12427505 is an apocalyptic number.

It is an amenable number.

12427505 is a deficient number, since it is larger than the sum of its proper divisors (2803087).

12427505 is an equidigital number, since it uses as much as digits as its factorization.

12427505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52935.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 12427505 is about 3525.2666565807. The cubic root of 12427505 is about 231.6299155568.

Adding to 12427505 its reverse (50572421), we get a palindrome (62999926).

The spelling of 12427505 in words is "twelve million, four hundred twenty-seven thousand, five hundred five".