125500217 has 2 divisors, whose sum is σ = 125500218. Its totient is φ = 125500216.

The previous prime is 125500211. The next prime is 125500223. The reversal of 125500217 is 712005521.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (125500211) and next prime (125500223).

It can be written as a sum of positive squares in only one way, i.e., 71639296 + 53860921 = 8464^2 + 7339^2 .

It is an emirp because it is prime and its reverse (712005521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125500217 - 2⁴ = 125500201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125500192 and 125500201.

It is not a weakly prime, because it can be changed into another prime (125500211) 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, 62750108 + 62750109.

It is an arithmetic number, because the mean of its divisors is an integer number (62750109).

Almost surely, 2^125500217 is an apocalyptic number.

It is an amenable number.

125500217 is a deficient number, since it is larger than the sum of its proper divisors (1).

125500217 is an equidigital number, since it uses as much as digits as its factorization.

125500217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 125500217 is about 11202.6879363838. The cubic root of 125500217 is about 500.6660683120. Note that the first 3 decimals are identical.

Adding to 125500217 its reverse (712005521), we get a palindrome (837505738).

The spelling of 125500217 in words is "one hundred twenty-five million, five hundred thousand, two hundred seventeen".