125443345 has 4 divisors (see below), whose sum is σ = 150532020. Its totient is φ = 100354672.

The previous prime is 125443343. The next prime is 125443349. The reversal of 125443345 is 543344521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63616576 + 61826769 = 7976^2 + 7863^2 .

It is a cyclic number.

It is not a de Polignac number, because 125443345 - 2¹ = 125443343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125443343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12544330 + ... + 12544339.

It is an arithmetic number, because the mean of its divisors is an integer number (37633005).

Almost surely, 2^125443345 is an apocalyptic number.

It is an amenable number.

125443345 is a deficient number, since it is larger than the sum of its proper divisors (25088675).

125443345 is an equidigital number, since it uses as much as digits as its factorization.

125443345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25088674.

The product of its digits is 28800, while the sum is 31.

The square root of 125443345 is about 11200.1493293616. The cubic root of 125443345 is about 500.5904291790.

Adding to 125443345 its reverse (543344521), we get a palindrome (668787866).

The spelling of 125443345 in words is "one hundred twenty-five million, four hundred forty-three thousand, three hundred forty-five".