125156029 has 2 divisors, whose sum is σ = 125156030. Its totient is φ = 125156028.

The previous prime is 125155999. The next prime is 125156039. The reversal of 125156029 is 920651521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78943225 + 46212804 = 8885^2 + 6798^2 .

It is a cyclic number.

It is not a de Polignac number, because 125156029 - 2⁹ = 125155517 is a prime.

It is equal to p_7118464 and since 125156029 and 7118464 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125156039) 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, 62578014 + 62578015.

It is an arithmetic number, because the mean of its divisors is an integer number (62578015).

Almost surely, 2^125156029 is an apocalyptic number.

It is an amenable number.

125156029 is a deficient number, since it is larger than the sum of its proper divisors (1).

125156029 is an equidigital number, since it uses as much as digits as its factorization.

125156029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 125156029 is about 11187.3155403788. The cubic root of 125156029 is about 500.2079521665.

The spelling of 125156029 in words is "one hundred twenty-five million, one hundred fifty-six thousand, twenty-nine".