125245720673 has 2 divisors, whose sum is σ = 125245720674. Its totient is φ = 125245720672.

The previous prime is 125245720609. The next prime is 125245720693. The reversal of 125245720673 is 376027542521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108473398609 + 16772322064 = 329353^2 + 129508^2 .

It is a cyclic number.

It is not a de Polignac number, because 125245720673 - 2⁶ = 125245720609 is a prime.

It is not a weakly prime, because it can be changed into another prime (125245720693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62622860336 + 62622860337.

It is an arithmetic number, because the mean of its divisors is an integer number (62622860337).

Almost surely, 2^125245720673 is an apocalyptic number.

It is an amenable number.

125245720673 is a deficient number, since it is larger than the sum of its proper divisors (1).

125245720673 is an equidigital number, since it uses as much as digits as its factorization.

125245720673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 125245720673 in words is "one hundred twenty-five billion, two hundred forty-five million, seven hundred twenty thousand, six hundred seventy-three".