12594001729 has 3 divisors (see below), whose sum is σ = 12594113953. Its totient is φ = 12593889506.

The previous prime is 12594001711. The next prime is 12594001747. The reversal of 12594001729 is 92710049521.

It is a happy number.

The square root of 12594001729 is 112223.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92710049521 = 661 ⋅140257261.

It is an interprime number because it is at equal distance from previous prime (12594001711) and next prime (12594001747).

It is not a de Polignac number, because 12594001729 - 2¹¹ = 12593999681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12594001691 and 12594001700.

It is not an unprimeable number, because it can be changed into a prime (12594008729) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 56112 + ... + 168334.

Almost surely, 2^12594001729 is an apocalyptic number.

12594001729 is the 112223-rd square number.

12594001729 is the 56112-nd centered octagonal number.

It is an amenable number.

12594001729 is a deficient number, since it is larger than the sum of its proper divisors (112224).

12594001729 is an frugal number, since it uses more digits than its factorization.

12594001729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224446 (or 112223 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

It can be divided in two parts, 1259400 and 1729, that added together give a square (1261129 = 1123²).

The spelling of 12594001729 in words is "twelve billion, five hundred ninety-four million, one thousand, seven hundred twenty-nine".