125849847 has 4 divisors (see below), whose sum is σ = 167799800. Its totient is φ = 83899896.

The previous prime is 125849833. The next prime is 125849851. The reversal of 125849847 is 748948521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748948521 = 3 ⋅249649507.

It is not a de Polignac number, because 125849847 - 2⁴ = 125849831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125849796 and 125849805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125849887) 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 in 3 ways as a sum of consecutive naturals, for example, 20974972 + ... + 20974977.

It is an arithmetic number, because the mean of its divisors is an integer number (41949950).

Almost surely, 2^125849847 is an apocalyptic number.

125849847 is a deficient number, since it is larger than the sum of its proper divisors (41949953).

125849847 is an equidigital number, since it uses as much as digits as its factorization.

125849847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41949952.

The product of its digits is 645120, while the sum is 48.

The square root of 125849847 is about 11218.2818203146. The cubic root of 125849847 is about 501.1305710249.

The spelling of 125849847 in words is "one hundred twenty-five million, eight hundred forty-nine thousand, eight hundred forty-seven".