12235678225 has 9 divisors (see below), whose sum is σ = 15172926843. Its totient is φ = 9788100120.

The previous prime is 12235678223. The next prime is 12235678249. The reversal of 12235678225 is 52287653221.

The square root of 12235678225 is 110615.

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., 4404844161 + 7830834064 = 66369^2 + 88492^2 .

It is not a de Polignac number, because 12235678225 - 2¹ = 12235678223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12235678223) 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, 542014 + ... + 564136.

Almost surely, 2^12235678225 is an apocalyptic number.

12235678225 is the 110615-th square number.

12235678225 is the 55308-th centered octagonal number.

It is an amenable number.

12235678225 is a deficient number, since it is larger than the sum of its proper divisors (2937248618).

12235678225 is an frugal number, since it uses more digits than its factorization.

12235678225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44256 (or 22128 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The spelling of 12235678225 in words is "twelve billion, two hundred thirty-five million, six hundred seventy-eight thousand, two hundred twenty-five".