12506265021 has 8 divisors (see below), whose sum is σ = 16688083104. Its totient is φ = 8330978480.

The previous prime is 12506265017. The next prime is 12506265041. The reversal of 12506265021 is 12056260521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12506265021 - 2² = 12506265017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12506265021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506265001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628415 + ... + 1636076.

It is an arithmetic number, because the mean of its divisors is an integer number (2086010388).

Almost surely, 2^12506265021 is an apocalyptic number.

It is an amenable number.

12506265021 is a deficient number, since it is larger than the sum of its proper divisors (4181818083).

12506265021 is a wasteful number, since it uses less digits than its factorization.

12506265021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265771.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 12506265021 in words is "twelve billion, five hundred six million, two hundred sixty-five thousand, twenty-one".