12551145125 has 8 divisors (see below), whose sum is σ = 15663829272. Its totient is φ = 10040916000.

The previous prime is 12551145121. The next prime is 12551145133. The reversal of 12551145125 is 52154115521.

12551145125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 193043236 + 12358101889 = 13894^2 + 111167^2 .

It is not a de Polignac number, because 12551145125 - 2² = 12551145121 is a prime.

It is a super-2 number, since 2×12551145125² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12551145091 and 12551145100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551145121) 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 7 ways as a sum of consecutive naturals, for example, 50204456 + ... + 50204705.

It is an arithmetic number, because the mean of its divisors is an integer number (1957978659).

Almost surely, 2^12551145125 is an apocalyptic number.

It is an amenable number.

12551145125 is a deficient number, since it is larger than the sum of its proper divisors (3112684147).

12551145125 is an equidigital number, since it uses as much as digits as its factorization.

12551145125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100409176 (or 100409166 counting only the distinct ones).

The product of its digits is 10000, while the sum is 32.

The spelling of 12551145125 in words is "twelve billion, five hundred fifty-one million, one hundred forty-five thousand, one hundred twenty-five".