125201530081 has 2 divisors, whose sum is σ = 125201530082. Its totient is φ = 125201530080.

The previous prime is 125201530073. The next prime is 125201530117. The reversal of 125201530081 is 180035102521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85951580625 + 39249949456 = 293175^2 + 198116^2 .

It is a cyclic number.

It is not a de Polignac number, because 125201530081 - 2³ = 125201530073 is a prime.

It is a super-2 number, since 2×125201530081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125201530061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62600765040 + 62600765041.

It is an arithmetic number, because the mean of its divisors is an integer number (62600765041).

Almost surely, 2^125201530081 is an apocalyptic number.

It is an amenable number.

125201530081 is a deficient number, since it is larger than the sum of its proper divisors (1).

125201530081 is an equidigital number, since it uses as much as digits as its factorization.

125201530081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 125201530081 in words is "one hundred twenty-five billion, two hundred one million, five hundred thirty thousand, eighty-one".