57081825 has 36 divisors (see below), whose sum is σ = 103238928. Its totient is φ = 30146400.

The previous prime is 57081811. The next prime is 57081863. The reversal of 57081825 is 52818075.

57081825 is a `hidden beast` number, since 570 + 8 + 1 + 82 + 5 = 666.

It is not a de Polignac number, because 57081825 - 2⁵ = 57081793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57081825.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22890 + ... + 25260.

It is an arithmetic number, because the mean of its divisors is an integer number (2867748).

Almost surely, 2^57081825 is an apocalyptic number.

It is an amenable number.

57081825 is a deficient number, since it is larger than the sum of its proper divisors (46157103).

57081825 is a wasteful number, since it uses less digits than its factorization.

57081825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 57081825 is about 7555.2514848945. The cubic root of 57081825 is about 385.0341792335.

The spelling of 57081825 in words is "fifty-seven million, eighty-one thousand, eight hundred twenty-five".