12585922969 has 9 divisors (see below), whose sum is σ = 12890366463. Its totient is φ = 12288515232.

The previous prime is 12585922967. The next prime is 12585923017. The reversal of 12585922969 is 96922958521.

The square root of 12585922969 is 112187.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6050817369 + 6535105600 = 77787^2 + 80840^2 .

It is not a de Polignac number, because 12585922969 - 2¹ = 12585922967 is a prime.

It is a super-2 number, since 2×12585922969² (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 (12585922967) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4822737 + ... + 4825345.

Almost surely, 2^12585922969 is an apocalyptic number.

12585922969 is the 112187-th square number.

12585922969 is the 56094-th centered octagonal number.

It is an amenable number.

12585922969 is a deficient number, since it is larger than the sum of its proper divisors (304443494).

12585922969 is an frugal number, since it uses more digits than its factorization.

12585922969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304 (or 2652 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 58.

The spelling of 12585922969 in words is "twelve billion, five hundred eighty-five million, nine hundred twenty-two thousand, nine hundred sixty-nine".