12256738425 has 48 divisors (see below), whose sum is σ = 22574448000. Its totient is φ = 6519983040.

The previous prime is 12256738423. The next prime is 12256738469. The reversal of 12256738425 is 52483765221.

12256738425 is a `hidden beast` number, since 1 + 2 + 2 + 567 + 3 + 84 + 2 + 5 = 666.

It is not a de Polignac number, because 12256738425 - 2¹ = 12256738423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12256738423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239236 + ... + 285914.

It is an arithmetic number, because the mean of its divisors is an integer number (470301000).

Almost surely, 2^12256738425 is an apocalyptic number.

12256738425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12256738425 is a deficient number, since it is larger than the sum of its proper divisors (10317709575).

12256738425 is a wasteful number, since it uses less digits than its factorization.

12256738425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47087 (or 47076 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 12256738425 in words is "twelve billion, two hundred fifty-six million, seven hundred thirty-eight thousand, four hundred twenty-five".