12345520125 has 16 divisors (see below), whose sum is σ = 20542946112. Its totient is φ = 6584277200.

The previous prime is 12345520111. The next prime is 12345520129. The reversal of 12345520125 is 52102554321.

It is not a de Polignac number, because 12345520125 - 2⁵ = 12345520093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12345520092 and 12345520101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345520129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16460319 + ... + 16461068.

It is an arithmetic number, because the mean of its divisors is an integer number (1283934132).

Almost surely, 2^12345520125 is an apocalyptic number.

12345520125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12345520125 is a deficient number, since it is larger than the sum of its proper divisors (8197425987).

12345520125 is an equidigital number, since it uses as much as digits as its factorization.

12345520125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32921405 (or 32921395 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12345520125 in words is "twelve billion, three hundred forty-five million, five hundred twenty thousand, one hundred twenty-five".