125287539 has 16 divisors (see below), whose sum is σ = 189369600. Its totient is φ = 73041696.

The previous prime is 125287537. The next prime is 125287553. The reversal of 125287539 is 935782521.

It is a happy number.

It is not a de Polignac number, because 125287539 - 2¹ = 125287537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125287539.

It is not an unprimeable number, because it can be changed into a prime (125287531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83799 + ... + 85280.

It is an arithmetic number, because the mean of its divisors is an integer number (11835600).

Almost surely, 2^125287539 is an apocalyptic number.

125287539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125287539 is a deficient number, since it is larger than the sum of its proper divisors (64082061).

125287539 is a wasteful number, since it uses less digits than its factorization.

125287539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169114.

The product of its digits is 151200, while the sum is 42.

The square root of 125287539 is about 11193.1916359902. The cubic root of 125287539 is about 500.3830917398.

The spelling of 125287539 in words is "one hundred twenty-five million, two hundred eighty-seven thousand, five hundred thirty-nine".