12530615257 has 32 divisors (see below), whose sum is σ = 13483008000. Its totient is φ = 11620065600.

The previous prime is 12530615243. The next prime is 12530615267. The reversal of 12530615257 is 75251603521.

12530615257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12530615257 - 2⁷ = 12530615129 is a prime.

It is a super-2 number, since 2×12530615257² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530615267) 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 31 ways as a sum of consecutive naturals, for example, 29905794 + ... + 29906212.

It is an arithmetic number, because the mean of its divisors is an integer number (421344000).

Almost surely, 2^12530615257 is an apocalyptic number.

It is an amenable number.

12530615257 is a deficient number, since it is larger than the sum of its proper divisors (952392743).

12530615257 is a wasteful number, since it uses less digits than its factorization.

12530615257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 12530615257 in words is "twelve billion, five hundred thirty million, six hundred fifteen thousand, two hundred fifty-seven".