12254012505 has 288 divisors, whose sum is σ = 27684543744. Its totient is φ = 5079158784.

The previous prime is 12254012489. The next prime is 12254012509. The reversal of 12254012505 is 50521045221.

12254012505 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 401 + 250 + 5 = 666.

12254012505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12254012505 - 2⁴ = 12254012489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12254012509) 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 287 ways as a sum of consecutive naturals, for example, 167863149 + ... + 167863221.

It is an arithmetic number, because the mean of its divisors is an integer number (96126888).

Almost surely, 2^12254012505 is an apocalyptic number.

12254012505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12254012505 is an abundant number, since it is smaller than the sum of its proper divisors (15430531239).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12254012505 is an frugal number, since it uses more digits than its factorization.

12254012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 12254012505 its reverse (50521045221), we get a palindrome (62775057726).

The spelling of 12254012505 in words is "twelve billion, two hundred fifty-four million, twelve thousand, five hundred five".