1872118725 has 12 divisors (see below), whose sum is σ = 3095236416. Its totient is φ = 998463280.

The previous prime is 1872118723. The next prime is 1872118789. The reversal of 1872118725 is 5278112781.

It is a happy number.

It is not a de Polignac number, because 1872118725 - 2¹ = 1872118723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872118723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12480717 + ... + 12480866.

It is an arithmetic number, because the mean of its divisors is an integer number (257936368).

Almost surely, 2^1872118725 is an apocalyptic number.

1872118725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1872118725 is a deficient number, since it is larger than the sum of its proper divisors (1223117691).

1872118725 is a wasteful number, since it uses less digits than its factorization.

1872118725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24961596 (or 24961591 counting only the distinct ones).

The product of its digits is 62720, while the sum is 42.

The square root of 1872118725 is about 43267.9873000813. The cubic root of 1872118725 is about 1232.4740835561.

The spelling of 1872118725 in words is "one billion, eight hundred seventy-two million, one hundred eighteen thousand, seven hundred twenty-five".