125443321 has 2 divisors, whose sum is σ = 125443322. Its totient is φ = 125443320.

The previous prime is 125443319. The next prime is 125443337. The reversal of 125443321 is 123344521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122345721 + 3097600 = 11061^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 125443321 - 2¹ = 125443319 is a prime.

Together with 125443319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125443621) 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, 62721660 + 62721661.

It is an arithmetic number, because the mean of its divisors is an integer number (62721661).

Almost surely, 2^125443321 is an apocalyptic number.

It is an amenable number.

125443321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125443321 is an equidigital number, since it uses as much as digits as its factorization.

125443321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 25.

The square root of 125443321 is about 11200.1482579473. The cubic root of 125443321 is about 500.5903972544.

Adding to 125443321 its reverse (123344521), we get a palindrome (248787842).

The spelling of 125443321 in words is "one hundred twenty-five million, four hundred forty-three thousand, three hundred twenty-one".