1118172625 has 8 divisors (see below), whose sum is σ = 1395479592. Its totient is φ = 894538000.

The previous prime is 1118172613. The next prime is 1118172689. The reversal of 1118172625 is 5262718111.

1118172625 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2879809 + 1115292816 = 1697^2 + 33396^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1118172625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4472566 + ... + 4472815.

It is an arithmetic number, because the mean of its divisors is an integer number (174434949).

Almost surely, 2^1118172625 is an apocalyptic number.

It is an amenable number.

1118172625 is a deficient number, since it is larger than the sum of its proper divisors (277306967).

1118172625 is an frugal number, since it uses more digits than its factorization.

1118172625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8945396 (or 8945386 counting only the distinct ones).

The product of its digits is 6720, while the sum is 34.

The square root of 1118172625 is about 33439.0882800354. The cubic root of 1118172625 is about 1037.9337132812.

The spelling of 1118172625 in words is "one billion, one hundred eighteen million, one hundred seventy-two thousand, six hundred twenty-five".