125544247 has 2 divisors, whose sum is σ = 125544248. Its totient is φ = 125544246.

The previous prime is 125544241. The next prime is 125544257. The reversal of 125544247 is 742445521.

It is a weak prime.

It is an emirp because it is prime and its reverse (742445521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125544247 - 2⁷ = 125544119 is a prime.

It is a super-2 number, since 2×125544247² = 31522715909594018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125544241) 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, 62772123 + 62772124.

It is an arithmetic number, because the mean of its divisors is an integer number (62772124).

Almost surely, 2^125544247 is an apocalyptic number.

125544247 is a deficient number, since it is larger than the sum of its proper divisors (1).

125544247 is an equidigital number, since it uses as much as digits as its factorization.

125544247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44800, while the sum is 34.

The square root of 125544247 is about 11204.6529174268. The cubic root of 125544247 is about 500.7246120342.

Adding to 125544247 its reverse (742445521), we get a palindrome (867989768).

The spelling of 125544247 in words is "one hundred twenty-five million, five hundred forty-four thousand, two hundred forty-seven".