125255072321 has 2 divisors, whose sum is σ = 125255072322. Its totient is φ = 125255072320.

The previous prime is 125255072311. The next prime is 125255072339. The reversal of 125255072321 is 123270552521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72380369296 + 52874703025 = 269036^2 + 229945^2 .

It is an emirp because it is prime and its reverse (123270552521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125255072321 - 2¹⁰ = 125255071297 is a prime.

It is not a weakly prime, because it can be changed into another prime (125255072311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62627536160 + 62627536161.

It is an arithmetic number, because the mean of its divisors is an integer number (62627536161).

Almost surely, 2^125255072321 is an apocalyptic number.

It is an amenable number.

125255072321 is a deficient number, since it is larger than the sum of its proper divisors (1).

125255072321 is an equidigital number, since it uses as much as digits as its factorization.

125255072321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 125255072321 in words is "one hundred twenty-five billion, two hundred fifty-five million, seventy-two thousand, three hundred twenty-one".