125747081 has 2 divisors, whose sum is σ = 125747082. Its totient is φ = 125747080.

The previous prime is 125747077. The next prime is 125747101. The reversal of 125747081 is 180747521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 25847056 = 9995^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 125747081 - 2² = 125747077 is a prime.

It is a super-2 number, since 2×125747081² = 31624656760041122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125747051) 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, 62873540 + 62873541.

It is an arithmetic number, because the mean of its divisors is an integer number (62873541).

Almost surely, 2^125747081 is an apocalyptic number.

It is an amenable number.

125747081 is a deficient number, since it is larger than the sum of its proper divisors (1).

125747081 is an equidigital number, since it uses as much as digits as its factorization.

125747081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 125747081 is about 11213.7005934705. The cubic root of 125747081 is about 500.9941301007.

The spelling of 125747081 in words is "one hundred twenty-five million, seven hundred forty-seven thousand, eighty-one".