125869217 has 2 divisors, whose sum is σ = 125869218. Its totient is φ = 125869216.

The previous prime is 125869201. The next prime is 125869253. The reversal of 125869217 is 712968521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124634896 + 1234321 = 11164^2 + 1111^2 .

It is a cyclic number.

It is not a de Polignac number, because 125869217 - 2⁴ = 125869201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125869267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62934608 + 62934609.

It is an arithmetic number, because the mean of its divisors is an integer number (62934609).

Almost surely, 2^125869217 is an apocalyptic number.

It is an amenable number.

125869217 is a deficient number, since it is larger than the sum of its proper divisors (1).

125869217 is an equidigital number, since it uses as much as digits as its factorization.

125869217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 125869217 is about 11219.1451100340. The cubic root of 125869217 is about 501.1562799720.

The spelling of 125869217 in words is "one hundred twenty-five million, eight hundred sixty-nine thousand, two hundred seventeen".