75125861 has 2 divisors, whose sum is σ = 75125862. Its totient is φ = 75125860.

The previous prime is 75125837. The next prime is 75125887. The reversal of 75125861 is 16852157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 7392961 = 8230^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 75125861 - 2¹⁴ = 75109477 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 (75125461) 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, 37562930 + 37562931.

It is an arithmetic number, because the mean of its divisors is an integer number (37562931).

Almost surely, 2^75125861 is an apocalyptic number.

It is an amenable number.

75125861 is a deficient number, since it is larger than the sum of its proper divisors (1).

75125861 is an equidigital number, since it uses as much as digits as its factorization.

75125861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 35.

The square root of 75125861 is about 8667.5175800226. The cubic root of 75125861 is about 421.9521014345.

The spelling of 75125861 in words is "seventy-five million, one hundred twenty-five thousand, eight hundred sixty-one".