125849851 has 2 divisors, whose sum is σ = 125849852. Its totient is φ = 125849850.

The previous prime is 125849833. The next prime is 125849881. The reversal of 125849851 is 158948521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125849851 - 2¹⁷ = 125718779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125849798 and 125849807.

It is not a weakly prime, because it can be changed into another prime (125849831) 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, 62924925 + 62924926.

It is an arithmetic number, because the mean of its divisors is an integer number (62924926).

Almost surely, 2^125849851 is an apocalyptic number.

125849851 is a deficient number, since it is larger than the sum of its proper divisors (1).

125849851 is an equidigital number, since it uses as much as digits as its factorization.

125849851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 43.

The square root of 125849851 is about 11218.2819985950. The cubic root of 125849851 is about 501.1305763342.

The spelling of 125849851 in words is "one hundred twenty-five million, eight hundred forty-nine thousand, eight hundred fifty-one".