12501512765 has 16 divisors (see below), whose sum is σ = 17543653248. Its totient is φ = 8373105216.

The previous prime is 12501512743. The next prime is 12501512767. The reversal of 12501512765 is 56721510521.

It is not a de Polignac number, because 12501512765 - 2⁶ = 12501512701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501512767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4151822 + ... + 4154831.

It is an arithmetic number, because the mean of its divisors is an integer number (1096478328).

Almost surely, 2^12501512765 is an apocalyptic number.

It is an amenable number.

12501512765 is a deficient number, since it is larger than the sum of its proper divisors (5042140483).

12501512765 is an equidigital number, since it uses as much as digits as its factorization.

12501512765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8306708.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 12501512765 in words is "twelve billion, five hundred one million, five hundred twelve thousand, seven hundred sixty-five".