57118725 has 72 divisors (see below), whose sum is σ = 110115720. Its totient is φ = 28200960.

The previous prime is 57118723. The next prime is 57118757. The reversal of 57118725 is 52781175.

57118725 is a `hidden beast` number, since 571 + 1 + 87 + 2 + 5 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 3272481 + 53846244 = 1809^2 + 7338^2 .

It is not a de Polignac number, because 57118725 - 2¹ = 57118723 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57118725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57118723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 416857 + ... + 416993.

It is an arithmetic number, because the mean of its divisors is an integer number (1529385).

Almost surely, 2^57118725 is an apocalyptic number.

It is an amenable number.

57118725 is a deficient number, since it is larger than the sum of its proper divisors (52996995).

57118725 is a wasteful number, since it uses less digits than its factorization.

57118725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 271 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 57118725 is about 7557.6931004110. The cubic root of 57118725 is about 385.1171285834.

The spelling of 57118725 in words is "fifty-seven million, one hundred eighteen thousand, seven hundred twenty-five".