12520075387 has 2 divisors, whose sum is σ = 12520075388. Its totient is φ = 12520075386.

The previous prime is 12520075297. The next prime is 12520075409. The reversal of 12520075387 is 78357002521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12520075387 - 2⁷ = 12520075259 is a prime.

It is not a weakly prime, because it can be changed into another prime (12520073387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260037693 + 6260037694.

It is an arithmetic number, because the mean of its divisors is an integer number (6260037694).

Almost surely, 2^12520075387 is an apocalyptic number.

12520075387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520075387 is an equidigital number, since it uses as much as digits as its factorization.

12520075387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 12520075387 in words is "twelve billion, five hundred twenty million, seventy-five thousand, three hundred eighty-seven".