125204156017 has 2 divisors, whose sum is σ = 125204156018. Its totient is φ = 125204156016.

The previous prime is 125204156003. The next prime is 125204156041. The reversal of 125204156017 is 710651402521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115573481521 + 9630674496 = 339961^2 + 98136^2 .

It is a cyclic number.

It is not a de Polignac number, because 125204156017 - 2¹⁵ = 125204123249 is a prime.

It is not a weakly prime, because it can be changed into another prime (125204156087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62602078008 + 62602078009.

It is an arithmetic number, because the mean of its divisors is an integer number (62602078009).

Almost surely, 2^125204156017 is an apocalyptic number.

It is an amenable number.

125204156017 is a deficient number, since it is larger than the sum of its proper divisors (1).

125204156017 is an equidigital number, since it uses as much as digits as its factorization.

125204156017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 125204156017 its reverse (710651402521), we get a palindrome (835855558538).

The spelling of 125204156017 in words is "one hundred twenty-five billion, two hundred four million, one hundred fifty-six thousand, seventeen".