125412849 has 12 divisors (see below), whose sum is σ = 187398900. Its totient is φ = 80725344.

The previous prime is 125412841. The next prime is 125412851. The reversal of 125412849 is 948214521.

It can be written as a sum of positive squares in 2 ways, for example, as 61732449 + 63680400 = 7857^2 + 7980^2 .

It is not a de Polignac number, because 125412849 - 2³ = 125412841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125412841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239994 + ... + 240515.

It is an arithmetic number, because the mean of its divisors is an integer number (15616575).

Almost surely, 2^125412849 is an apocalyptic number.

It is an amenable number.

125412849 is a deficient number, since it is larger than the sum of its proper divisors (61986051).

125412849 is a wasteful number, since it uses less digits than its factorization.

125412849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480544 (or 480541 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 125412849 is about 11198.7878361901. The cubic root of 125412849 is about 500.5498604187.

The spelling of 125412849 in words is "one hundred twenty-five million, four hundred twelve thousand, eight hundred forty-nine".