57025681 has 2 divisors, whose sum is σ = 57025682. Its totient is φ = 57025680.

The previous prime is 57025663. The next prime is 57025691. The reversal of 57025681 is 18652075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 23571025 = 5784^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 57025681 - 2⁹ = 57025169 is a prime.

It is a super-2 number, since 2×57025681² = 6503856587027522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57025651) 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 as a sum of consecutive naturals, namely, 28512840 + 28512841.

It is an arithmetic number, because the mean of its divisors is an integer number (28512841).

Almost surely, 2^57025681 is an apocalyptic number.

It is an amenable number.

57025681 is a deficient number, since it is larger than the sum of its proper divisors (1).

57025681 is an equidigital number, since it uses as much as digits as its factorization.

57025681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 57025681 is about 7551.5350095196. The cubic root of 57025681 is about 384.9079017349.

The spelling of 57025681 in words is "fifty-seven million, twenty-five thousand, six hundred eighty-one".