125841857 has 2 divisors, whose sum is σ = 125841858. Its totient is φ = 125841856.

The previous prime is 125841851. The next prime is 125841899. The reversal of 125841857 is 758148521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 379456 = 11201^2 + 616^2 .

It is a cyclic number.

It is not a de Polignac number, because 125841857 - 2⁸ = 125841601 is a prime.

It is not a weakly prime, because it can be changed into another prime (125841851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62920928 + 62920929.

It is an arithmetic number, because the mean of its divisors is an integer number (62920929).

Almost surely, 2^125841857 is an apocalyptic number.

It is an amenable number.

125841857 is a deficient number, since it is larger than the sum of its proper divisors (1).

125841857 is an equidigital number, since it uses as much as digits as its factorization.

125841857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 41.

The square root of 125841857 is about 11217.9256995222. The cubic root of 125841857 is about 501.1199654816.

It can be divided in two parts, 12584 and 1857, that added together give a palindrome (14441).

The spelling of 125841857 in words is "one hundred twenty-five million, eight hundred forty-one thousand, eight hundred fifty-seven".