125217437 has 2 divisors, whose sum is σ = 125217438. Its totient is φ = 125217436.

The previous prime is 125217413. The next prime is 125217457. The reversal of 125217437 is 734712521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125193721 + 23716 = 11189^2 + 154^2 .

It is a cyclic number.

It is not a de Polignac number, because 125217437 - 2⁸ = 125217181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125217457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62608718 + 62608719.

It is an arithmetic number, because the mean of its divisors is an integer number (62608719).

Almost surely, 2^125217437 is an apocalyptic number.

It is an amenable number.

125217437 is a deficient number, since it is larger than the sum of its proper divisors (1).

125217437 is an equidigital number, since it uses as much as digits as its factorization.

125217437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 32.

The square root of 125217437 is about 11190.0597406806. The cubic root of 125217437 is about 500.2897480597.

Adding to 125217437 its reverse (734712521), we get a palindrome (859929958).

The spelling of 125217437 in words is "one hundred twenty-five million, two hundred seventeen thousand, four hundred thirty-seven".