12501463521 has 32 divisors (see below), whose sum is σ = 17592422400. Its totient is φ = 7885424960.

The previous prime is 12501463517. The next prime is 12501463529. The reversal of 12501463521 is 12536410521.

It is a cyclic number.

It is not a de Polignac number, because 12501463521 - 2² = 12501463517 is a prime.

It is a super-3 number, since 3×12501463521³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12501463529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1025500 + ... + 1037618.

It is an arithmetic number, because the mean of its divisors is an integer number (549763200).

Almost surely, 2^12501463521 is an apocalyptic number.

It is an amenable number.

12501463521 is a deficient number, since it is larger than the sum of its proper divisors (5090958879).

12501463521 is a wasteful number, since it uses less digits than its factorization.

12501463521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12389.

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

The spelling of 12501463521 in words is "twelve billion, five hundred one million, four hundred sixty-three thousand, five hundred twenty-one".