2005125501 has 8 divisors (see below), whose sum is σ = 2674751040. Its totient is φ = 1336125152.

The previous prime is 2005125407. The next prime is 2005125517. The reversal of 2005125501 is 1055215002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005125501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005125581) 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 7 ways as a sum of consecutive naturals, for example, 148761 + ... + 161678.

It is an arithmetic number, because the mean of its divisors is an integer number (334343880).

Almost surely, 2^2005125501 is an apocalyptic number.

It is an amenable number.

2005125501 is a deficient number, since it is larger than the sum of its proper divisors (669625539).

2005125501 is a wasteful number, since it uses less digits than its factorization.

2005125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312595.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2005125501 is about 44778.6277257354. The cubic root of 2005125501 is about 1260.9964195495.

The spelling of 2005125501 in words is "two billion, five million, one hundred twenty-five thousand, five hundred one".