12125504045 has 4 divisors (see below), whose sum is σ = 14550604860. Its totient is φ = 9700403232.

The previous prime is 12125504029. The next prime is 12125504051. The reversal of 12125504045 is 54040552121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54040552121 = 70867 ⋅762563.

It can be written as a sum of positive squares in 2 ways, for example, as 6036979204 + 6088524841 = 77698^2 + 78029^2 .

It is a cyclic number.

It is not a de Polignac number, because 12125504045 - 2⁴ = 12125504029 is a prime.

It is a super-2 number, since 2×12125504045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12125503999 and 12125504017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212550400 + ... + 1212550409.

It is an arithmetic number, because the mean of its divisors is an integer number (3637651215).

Almost surely, 2^12125504045 is an apocalyptic number.

It is an amenable number.

12125504045 is a deficient number, since it is larger than the sum of its proper divisors (2425100815).

12125504045 is an equidigital number, since it uses as much as digits as its factorization.

12125504045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425100814.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 12125504045 in words is "twelve billion, one hundred twenty-five million, five hundred four thousand, forty-five".