538725641 has 2 divisors, whose sum is σ = 538725642. Its totient is φ = 538725640.

The previous prime is 538725611. The next prime is 538725643. The reversal of 538725641 is 146527835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532455625 + 6270016 = 23075^2 + 2504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538725641 is a prime.

Together with 538725643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (538725643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269362820 + 269362821.

It is an arithmetic number, because the mean of its divisors is an integer number (269362821).

Almost surely, 2^538725641 is an apocalyptic number.

It is an amenable number.

538725641 is a deficient number, since it is larger than the sum of its proper divisors (1).

538725641 is an equidigital number, since it uses as much as digits as its factorization.

538725641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 538725641 is about 23210.4640410311. The cubic root of 538725641 is about 813.6841984605.

The spelling of 538725641 in words is "five hundred thirty-eight million, seven hundred twenty-five thousand, six hundred forty-one".