12594450625 has 25 divisors (see below), whose sum is σ = 15976480421. Its totient is φ = 9925179000.

The previous prime is 12594450619. The next prime is 12594450641. The reversal of 12594450625 is 52605449521.

The square root of 12594450625 is 112225.

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

It can be written as a sum of positive squares in 2 ways, for example, as 987404929 + 11607045696 = 31423^2 + 107736^2 .

It is a tau number, because it is divible by the number of its divisors (25).

It is not a de Polignac number, because 12594450625 - 2⁵ = 12594450593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 187976842 + ... + 187976908.

Almost surely, 2^12594450625 is an apocalyptic number.

12594450625 is the 112225-th square number.

12594450625 is the 56113-rd centered octagonal number.

It is an amenable number.

12594450625 is a deficient number, since it is larger than the sum of its proper divisors (3382029796).

12594450625 is an frugal number, since it uses more digits than its factorization.

12594450625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 12594450625 in words is "twelve billion, five hundred ninety-four million, four hundred fifty thousand, six hundred twenty-five".