125015129 has 2 divisors, whose sum is σ = 125015130. Its totient is φ = 125015128.

The previous prime is 125015113. The next prime is 125015153. The reversal of 125015129 is 921510521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124367104 + 648025 = 11152^2 + 805^2 .

It is an emirp because it is prime and its reverse (921510521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125015129 - 2⁴ = 125015113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125015098 and 125015107.

It is not a weakly prime, because it can be changed into another prime (125035129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62507564 + 62507565.

It is an arithmetic number, because the mean of its divisors is an integer number (62507565).

Almost surely, 2^125015129 is an apocalyptic number.

It is an amenable number.

125015129 is a deficient number, since it is larger than the sum of its proper divisors (1).

125015129 is an equidigital number, since it uses as much as digits as its factorization.

125015129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 125015129 is about 11181.0164564766. The cubic root of 125015129 is about 500.0201711862.

The spelling of 125015129 in words is "one hundred twenty-five million, fifteen thousand, one hundred twenty-nine".