125501005 has 12 divisors (see below), whose sum is σ = 175189500. Its totient is φ = 86057664.

The previous prime is 125500993. The next prime is 125501027. The reversal of 125501005 is 500105521.

It can be written as a sum of positive squares in 2 ways, for example, as 95765796 + 29735209 = 9786^2 + 5453^2 .

It is not a de Polignac number, because 125501005 - 2¹¹ = 125498957 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 255880 + ... + 256369.

It is an arithmetic number, because the mean of its divisors is an integer number (14599125).

Almost surely, 2^125501005 is an apocalyptic number.

It is an amenable number.

125501005 is a deficient number, since it is larger than the sum of its proper divisors (49688495).

125501005 is an equidigital number, since it uses as much as digits as its factorization.

125501005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512268 (or 512261 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 125501005 is about 11202.7231064594. The cubic root of 125501005 is about 500.6671161828.

Adding to 125501005 its reverse (500105521), we get a palindrome (625606526).

The spelling of 125501005 in words is "one hundred twenty-five million, five hundred one thousand, five".