5128025657 has 2 divisors, whose sum is σ = 5128025658. Its totient is φ = 5128025656.

The previous prime is 5128025647. The next prime is 5128025681. The reversal of 5128025657 is 7565208215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3358897936 + 1769127721 = 57956^2 + 42061^2 .

It is a cyclic number.

It is not a de Polignac number, because 5128025657 - 2¹⁸ = 5127763513 is a prime.

It is a super-3 number, since 3×5128025657³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (5128025647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2564012828 + 2564012829.

It is an arithmetic number, because the mean of its divisors is an integer number (2564012829).

Almost surely, 2^5128025657 is an apocalyptic number.

It is an amenable number.

5128025657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5128025657 is an equidigital number, since it uses as much as digits as its factorization.

5128025657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 5128025657 is about 71610.2343034849. The cubic root of 5128025657 is about 1724.4478419853.

The spelling of 5128025657 in words is "five billion, one hundred twenty-eight million, twenty-five thousand, six hundred fifty-seven".