1172842225 has 12 divisors (see below), whose sum is σ = 1455527500. Its totient is φ = 937497600.

The previous prime is 1172842219. The next prime is 1172842249. The reversal of 1172842225 is 5222482711.

It can be written as a sum of positive squares in 6 ways, for example, as 203889841 + 968952384 = 14279^2 + 31128^2 .

It is not a de Polignac number, because 1172842225 - 2⁵ = 1172842193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12445 + ... + 50005.

Almost surely, 2^1172842225 is an apocalyptic number.

It is an amenable number.

1172842225 is a deficient number, since it is larger than the sum of its proper divisors (282685275).

1172842225 is a wasteful number, since it uses less digits than its factorization.

1172842225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38820 (or 38815 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 1172842225 is about 34246.7841555963. The cubic root of 1172842225 is about 1054.5808102303.

The spelling of 1172842225 in words is "one billion, one hundred seventy-two million, eight hundred forty-two thousand, two hundred twenty-five".