12504452445 has 48 divisors (see below), whose sum is σ = 22622129712. Its totient is φ = 6383569920.

The previous prime is 12504452431. The next prime is 12504452447. The reversal of 12504452445 is 54425440521.

12504452445 is a `hidden beast` number, since 1 + 2 + 50 + 44 + 524 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3731132889 + 8773319556 = 61083^2 + 93666^2 .

It is not a de Polignac number, because 12504452445 - 2⁶ = 12504452381 is a prime.

It is a super-2 number, since 2×12504452445² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504452447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33847 + ... + 161723.

It is an arithmetic number, because the mean of its divisors is an integer number (471294369).

Almost surely, 2^12504452445 is an apocalyptic number.

12504452445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12504452445 is a deficient number, since it is larger than the sum of its proper divisors (10117677267).

12504452445 is a wasteful number, since it uses less digits than its factorization.

12504452445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127982 (or 127979 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 12504452445 its reverse (54425440521), we get a palindrome (66929892966).

The spelling of 12504452445 in words is "twelve billion, five hundred four million, four hundred fifty-two thousand, four hundred forty-five".