125501029 has 2 divisors, whose sum is σ = 125501030. Its totient is φ = 125501028.

The previous prime is 125501027. The next prime is 125501053. The reversal of 125501029 is 920105521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 53217025 = 8502^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 125501029 - 2¹ = 125501027 is a prime.

Together with 125501027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 125500994 and 125501012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125501027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62750514 + 62750515.

It is an arithmetic number, because the mean of its divisors is an integer number (62750515).

Almost surely, 2^125501029 is an apocalyptic number.

It is an amenable number.

125501029 is a deficient number, since it is larger than the sum of its proper divisors (1).

125501029 is an equidigital number, since it uses as much as digits as its factorization.

125501029 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 25.

The square root of 125501029 is about 11202.7241776275. The cubic root of 125501029 is about 500.6671480976.

The spelling of 125501029 in words is "one hundred twenty-five million, five hundred one thousand, twenty-nine".