125043917 has 2 divisors, whose sum is σ = 125043918. Its totient is φ = 125043916.

The previous prime is 125043913. The next prime is 125043943. The reversal of 125043917 is 719340521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123232201 + 1811716 = 11101^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 125043917 - 2² = 125043913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125043913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62521958 + 62521959.

It is an arithmetic number, because the mean of its divisors is an integer number (62521959).

Almost surely, 2^125043917 is an apocalyptic number.

It is an amenable number.

125043917 is a deficient number, since it is larger than the sum of its proper divisors (1).

125043917 is an equidigital number, since it uses as much as digits as its factorization.

125043917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 125043917 is about 11182.3037429682. The cubic root of 125043917 is about 500.0585491437.

The spelling of 125043917 in words is "one hundred twenty-five million, forty-three thousand, nine hundred seventeen".