127505005 has 4 divisors (see below), whose sum is σ = 153006012. Its totient is φ = 102004000.

The previous prime is 127504969. The next prime is 127505017. The reversal of 127505005 is 500505721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41126569 + 86378436 = 6413^2 + 9294^2 .

It is a de Polignac number, because none of the positive numbers 2^k-127505005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12750496 + ... + 12750505.

It is an arithmetic number, because the mean of its divisors is an integer number (38251503).

Almost surely, 2^127505005 is an apocalyptic number.

It is an amenable number.

127505005 is a deficient number, since it is larger than the sum of its proper divisors (25501007).

127505005 is an equidigital number, since it uses as much as digits as its factorization.

127505005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25501006.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 127505005 is about 11291.8114135864. The cubic root of 127505005 is about 503.3179405065.

The spelling of 127505005 in words is "one hundred twenty-seven million, five hundred five thousand, five".