1239112225 has 36 divisors (see below), whose sum is σ = 1670880036. Its totient is φ = 911139840.

The previous prime is 1239112177. The next prime is 1239112243. The reversal of 1239112225 is 5222119321.

It can be written as a sum of positive squares in 18 ways, for example, as 1071383824 + 167728401 = 32732^2 + 12951^2 .

It is not a de Polignac number, because 1239112225 - 2¹¹ = 1239110177 is a prime.

It is a super-2 number, since 2×1239112225² = 3070798212288901250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1239112193 and 1239112202.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1321957 + ... + 1322893.

Almost surely, 2^1239112225 is an apocalyptic number.

It is an amenable number.

1239112225 is a deficient number, since it is larger than the sum of its proper divisors (431767811).

1239112225 is a wasteful number, since it uses less digits than its factorization.

1239112225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1268 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1239112225 is about 35201.0259083453. The cubic root of 1239112225 is about 1074.0806201018.

The spelling of 1239112225 in words is "one billion, two hundred thirty-nine million, one hundred twelve thousand, two hundred twenty-five".