125128727 has 2 divisors, whose sum is σ = 125128728. Its totient is φ = 125128726.

The previous prime is 125128681. The next prime is 125128777. The reversal of 125128727 is 727821521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125128727 - 2¹⁰ = 125127703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125128777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62564363 + 62564364.

It is an arithmetic number, because the mean of its divisors is an integer number (62564364).

Almost surely, 2^125128727 is an apocalyptic number.

125128727 is a deficient number, since it is larger than the sum of its proper divisors (1).

125128727 is an equidigital number, since it uses as much as digits as its factorization.

125128727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 35.

The square root of 125128727 is about 11186.0952525893. The cubic root of 125128727 is about 500.1715771159.

The spelling of 125128727 in words is "one hundred twenty-five million, one hundred twenty-eight thousand, seven hundred twenty-seven".