12520720225 has 48 divisors (see below), whose sum is σ = 17630121600. Its totient is φ = 8744440320.

The previous prime is 12520720181. The next prime is 12520720253. The reversal of 12520720225 is 52202702521.

It is not a de Polignac number, because 12520720225 - 2⁹ = 12520719713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12520720193 and 12520720202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4586661 + ... + 4589389.

It is an arithmetic number, because the mean of its divisors is an integer number (367294200).

Almost surely, 2^12520720225 is an apocalyptic number.

It is an amenable number.

12520720225 is a deficient number, since it is larger than the sum of its proper divisors (5109401375).

12520720225 is a wasteful number, since it uses less digits than its factorization.

12520720225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The spelling of 12520720225 in words is "twelve billion, five hundred twenty million, seven hundred twenty thousand, two hundred twenty-five".