125782901 has 2 divisors, whose sum is σ = 125782902. Its totient is φ = 125782900.

The previous prime is 125782871. The next prime is 125782933. The reversal of 125782901 is 109287521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119028100 + 6754801 = 10910^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 125782901 - 2¹⁸ = 125520757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125785901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62891450 + 62891451.

It is an arithmetic number, because the mean of its divisors is an integer number (62891451).

Almost surely, 2^125782901 is an apocalyptic number.

It is an amenable number.

125782901 is a deficient number, since it is larger than the sum of its proper divisors (1).

125782901 is an equidigital number, since it uses as much as digits as its factorization.

125782901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 125782901 is about 11215.2976331438. The cubic root of 125782901 is about 501.0416962308.

The spelling of 125782901 in words is "one hundred twenty-five million, seven hundred eighty-two thousand, nine hundred one".