201125726616557 has 2 divisors, whose sum is σ = 201125726616558. Its totient is φ = 201125726616556.

The previous prime is 201125726616517. The next prime is 201125726616671. The reversal of 201125726616557 is 755616627521102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193052934133801 + 8072792482756 = 13894349^2 + 2841266^2 .

It is a cyclic number.

It is not a de Polignac number, because 201125726616557 - 2²⁶ = 201125659507693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201125726616517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100562863308278 + 100562863308279.

It is an arithmetic number, because the mean of its divisors is an integer number (100562863308279).

Almost surely, 2^{201125726616557} is an apocalyptic number.

It is an amenable number.

201125726616557 is a deficient number, since it is larger than the sum of its proper divisors (1).

201125726616557 is an equidigital number, since it uses as much as digits as its factorization.

201125726616557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 201125726616557 in words is "two hundred one trillion, one hundred twenty-five billion, seven hundred twenty-six million, six hundred sixteen thousand, five hundred fifty-seven".