125864069 has 2 divisors, whose sum is σ = 125864070. Its totient is φ = 125864068.

The previous prime is 125864021. The next prime is 125864111. The reversal of 125864069 is 960468521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124055044 + 1809025 = 11138^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 125864069 - 2²⁴ = 109086853 is a prime.

It is a super-2 number, since 2×125864069² = 31683527730473522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125864369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62932034 + 62932035.

It is an arithmetic number, because the mean of its divisors is an integer number (62932035).

Almost surely, 2^125864069 is an apocalyptic number.

It is an amenable number.

125864069 is a deficient number, since it is larger than the sum of its proper divisors (1).

125864069 is an equidigital number, since it uses as much as digits as its factorization.

125864069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 125864069 is about 11218.9156784424. The cubic root of 125864069 is about 501.1494475159.

The spelling of 125864069 in words is "one hundred twenty-five million, eight hundred sixty-four thousand, sixty-nine".