125013001 has 2 divisors, whose sum is σ = 125013002. Its totient is φ = 125013000.

The previous prime is 125012999. The next prime is 125013029. The reversal of 125013001 is 100310521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119137225 + 5875776 = 10915^2 + 2424^2 .

It is a cyclic number.

It is not a de Polignac number, because 125013001 - 2¹ = 125012999 is a prime.

Together with 125012999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125013401) 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, 62506500 + 62506501.

It is an arithmetic number, because the mean of its divisors is an integer number (62506501).

Almost surely, 2^125013001 is an apocalyptic number.

It is an amenable number.

125013001 is a deficient number, since it is larger than the sum of its proper divisors (1).

125013001 is an equidigital number, since it uses as much as digits as its factorization.

125013001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 125013001 is about 11180.9212947771. The cubic root of 125013001 is about 500.0173340657.

Adding to 125013001 its reverse (100310521), we get a palindrome (225323522).

The spelling of 125013001 in words is "one hundred twenty-five million, thirteen thousand, one".