125288129 has 2 divisors, whose sum is σ = 125288130. Its totient is φ = 125288128.

The previous prime is 125288101. The next prime is 125288171. The reversal of 125288129 is 921882521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 5166529 = 10960^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 125288129 - 2¹⁶ = 125222593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125288092 and 125288101.

It is not a weakly prime, because it can be changed into another prime (125284129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62644064 + 62644065.

It is an arithmetic number, because the mean of its divisors is an integer number (62644065).

Almost surely, 2^125288129 is an apocalyptic number.

It is an amenable number.

125288129 is a deficient number, since it is larger than the sum of its proper divisors (1).

125288129 is an equidigital number, since it uses as much as digits as its factorization.

125288129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 125288129 is about 11193.2179912660. The cubic root of 125288129 is about 500.3838772012.

The spelling of 125288129 in words is "one hundred twenty-five million, two hundred eighty-eight thousand, one hundred twenty-nine".