57625720561 has 2 divisors, whose sum is σ = 57625720562. Its totient is φ = 57625720560.

The previous prime is 57625720469. The next prime is 57625720571. The reversal of 57625720561 is 16502752675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34957406961 + 22668313600 = 186969^2 + 150560^2 .

It is a cyclic number.

It is not a de Polignac number, because 57625720561 - 2¹³ = 57625712369 is a prime.

It is a super-3 number, since 3×57625720561³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (57625720571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28812860280 + 28812860281.

It is an arithmetic number, because the mean of its divisors is an integer number (28812860281).

Almost surely, 2^57625720561 is an apocalyptic number.

It is an amenable number.

57625720561 is a deficient number, since it is larger than the sum of its proper divisors (1).

57625720561 is an equidigital number, since it uses as much as digits as its factorization.

57625720561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 57625720561 in words is "fifty-seven billion, six hundred twenty-five million, seven hundred twenty thousand, five hundred sixty-one".