12247505 has 16 divisors (see below), whose sum is σ = 15143760. Its totient is φ = 9504768.

The previous prime is 12247471. The next prime is 12247507. The reversal of 12247505 is 50574221.

It can be written as a sum of positive squares in 8 ways, for example, as 18496 + 12229009 = 136^2 + 3497^2 .

It is a cyclic number.

It is not a de Polignac number, because 12247505 - 2⁶ = 12247441 is a prime.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12247507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29741 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (946485).

Almost surely, 2^12247505 is an apocalyptic number.

It is an amenable number.

12247505 is a deficient number, since it is larger than the sum of its proper divisors (2896255).

12247505 is a wasteful number, since it uses less digits than its factorization.

12247505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

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

The square root of 12247505 is about 3499.6435532780. The cubic root of 12247505 is about 230.5061631477.

The spelling of 12247505 in words is "twelve million, two hundred forty-seven thousand, five hundred five".