12501563269 has 16 divisors (see below), whose sum is σ = 13635523440. Its totient is φ = 11392980480.

The previous prime is 12501563251. The next prime is 12501563279. The reversal of 12501563269 is 96236510521.

It can be written as a sum of positive squares in 8 ways, for example, as 22439169 + 12479124100 = 4737^2 + 111710^2 .

It is a cyclic number.

It is not a de Polignac number, because 12501563269 - 2⁵ = 12501563237 is a prime.

It is a super-2 number, since 2×12501563269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501563279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382479 + ... + 413875.

It is an arithmetic number, because the mean of its divisors is an integer number (852220215).

Almost surely, 2^12501563269 is an apocalyptic number.

It is an amenable number.

12501563269 is a deficient number, since it is larger than the sum of its proper divisors (1133960171).

12501563269 is a wasteful number, since it uses less digits than its factorization.

12501563269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31800.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 12501563269 in words is "twelve billion, five hundred one million, five hundred sixty-three thousand, two hundred sixty-nine".