125128807 has 2 divisors, whose sum is σ = 125128808. Its totient is φ = 125128806.

The previous prime is 125128777. The next prime is 125128819. The reversal of 125128807 is 708821521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125128807 - 2¹¹ = 125126759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125128837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62564403 + 62564404.

It is an arithmetic number, because the mean of its divisors is an integer number (62564404).

Almost surely, 2^125128807 is an apocalyptic number.

125128807 is a deficient number, since it is larger than the sum of its proper divisors (1).

125128807 is an equidigital number, since it uses as much as digits as its factorization.

125128807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 125128807 is about 11186.0988284567. The cubic root of 125128807 is about 500.1716837093.

The spelling of 125128807 in words is "one hundred twenty-five million, one hundred twenty-eight thousand, eight hundred seven".