125040005 has 8 divisors (see below), whose sum is σ = 150117624. Its totient is φ = 99985600.

The previous prime is 125039989. The next prime is 125040011. The reversal of 125040005 is 500040521.

It can be written as a sum of positive squares in 4 ways, for example, as 3996001 + 121044004 = 1999^2 + 11002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125040005 - 2⁴ = 125039989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9935 + ... + 18675.

It is an arithmetic number, because the mean of its divisors is an integer number (18764703).

Almost surely, 2^125040005 is an apocalyptic number.

It is an amenable number.

125040005 is a deficient number, since it is larger than the sum of its proper divisors (25077619).

125040005 is an equidigital number, since it uses as much as digits as its factorization.

125040005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11607.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 125040005 is about 11182.1288223665. The cubic root of 125040005 is about 500.0533343107.

Adding to 125040005 its reverse (500040521), we get a palindrome (625080526).

The spelling of 125040005 in words is "one hundred twenty-five million, forty thousand, five".