125751973 has 2 divisors, whose sum is σ = 125751974. Its totient is φ = 125751972.

The previous prime is 125751953. The next prime is 125752019. The reversal of 125751973 is 379157521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81036004 + 44715969 = 9002^2 + 6687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125751973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125751943) 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, 62875986 + 62875987.

It is an arithmetic number, because the mean of its divisors is an integer number (62875987).

Almost surely, 2^125751973 is an apocalyptic number.

It is an amenable number.

125751973 is a deficient number, since it is larger than the sum of its proper divisors (1).

125751973 is an equidigital number, since it uses as much as digits as its factorization.

125751973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 40.

The square root of 125751973 is about 11213.9187173798. The cubic root of 125751973 is about 501.0006268227. Note that the first 3 decimals are identical.

The spelling of 125751973 in words is "one hundred twenty-five million, seven hundred fifty-one thousand, nine hundred seventy-three".