12206254125025 has 27 divisors (see below), whose sum is σ = 15465684585619. Its totient is φ = 9556594423280.

The previous prime is 12206254125011. The next prime is 12206254125029. The reversal of 12206254125025 is 52052145260221.

The square root of 12206254125025 is 3493745.

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., 4394251485009 + 7812002640016 = 2096247^2 + 2794996^2 .

It is not a de Polignac number, because 12206254125025 - 2⁹ = 12206254124513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12206254125029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 821022642 + ... + 821037508.

Almost surely, 2^{12206254125025} is an apocalyptic number.

12206254125025 is the 3493745-th square number.

12206254125025 is the 1746873-rd centered octagonal number.

It is an amenable number.

12206254125025 is a deficient number, since it is larger than the sum of its proper divisors (3259430460594).

12206254125025 is an frugal number, since it uses more digits than its factorization.

12206254125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29838 (or 14919 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 12206254125025 its reverse (52052145260221), we get a palindrome (64258399385246).

The spelling of 12206254125025 in words is "twelve trillion, two hundred six billion, two hundred fifty-four million, one hundred twenty-five thousand, twenty-five".