125844401 has 2 divisors, whose sum is σ = 125844402. Its totient is φ = 125844400.

The previous prime is 125844377. The next prime is 125844491. The reversal of 125844401 is 104448521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121000000 + 4844401 = 11000^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 125844401 - 2⁶ = 125844337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (125844491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62922200 + 62922201.

It is an arithmetic number, because the mean of its divisors is an integer number (62922201).

Almost surely, 2^125844401 is an apocalyptic number.

It is an amenable number.

125844401 is a deficient number, since it is larger than the sum of its proper divisors (1).

125844401 is an equidigital number, since it uses as much as digits as its factorization.

125844401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 125844401 is about 11218.0390888961. The cubic root of 125844401 is about 501.1233423140.

The spelling of 125844401 in words is "one hundred twenty-five million, eight hundred forty-four thousand, four hundred one".