1172143025 has 12 divisors (see below), whose sum is σ = 1503577500. Its totient is φ = 905378880.

The previous prime is 1172142991. The next prime is 1172143031. The reversal of 1172143025 is 5203412711.

It can be written as a sum of positive squares in 6 ways, for example, as 929296 + 1171213729 = 964^2 + 34223^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1172143025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1172142985 and 1172143003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807650 + ... + 809099.

It is an arithmetic number, because the mean of its divisors is an integer number (125298125).

Almost surely, 2^1172143025 is an apocalyptic number.

It is an amenable number.

1172143025 is a deficient number, since it is larger than the sum of its proper divisors (331434475).

1172143025 is a wasteful number, since it uses less digits than its factorization.

1172143025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616788 (or 1616783 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1172143025 is about 34236.5743759506. The cubic root of 1172143025 is about 1054.3712027589.

Adding to 1172143025 its reverse (5203412711), we get a palindrome (6375555736).

The spelling of 1172143025 in words is "one billion, one hundred seventy-two million, one hundred forty-three thousand, twenty-five".