125530001 has 2 divisors, whose sum is σ = 125530002. Its totient is φ = 125530000.

The previous prime is 125529923. The next prime is 125530037. The reversal of 125530001 is 100035521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 67600 = 11201^2 + 260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125530001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125535001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62765000 + 62765001.

It is an arithmetic number, because the mean of its divisors is an integer number (62765001).

Almost surely, 2^125530001 is an apocalyptic number.

It is an amenable number.

125530001 is a deficient number, since it is larger than the sum of its proper divisors (1).

125530001 is an equidigital number, since it uses as much as digits as its factorization.

125530001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 125530001 is about 11204.0171813506. The cubic root of 125530001 is about 500.7056715867.

Adding to 125530001 its reverse (100035521), we get a palindrome (225565522).

The spelling of 125530001 in words is "one hundred twenty-five million, five hundred thirty thousand, one".