2505805505 has 8 divisors (see below), whose sum is σ = 3436533312. Its totient is φ = 1718266608.

The previous prime is 2505805451. The next prime is 2505805507. The reversal of 2505805505 is 5055085052.

It is a happy number.

2505805505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2505805505 - 2¹² = 2505801409 is a prime.

It is a super-2 number, since 2×2505805505² = 12558122457776610050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 71594443 = 2505805505 / (2 + 5 + 0 + 5 + 8 + 0 + 5 + 5 + 0 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505805507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35797187 + ... + 35797256.

It is an arithmetic number, because the mean of its divisors is an integer number (429566664).

Almost surely, 2^2505805505 is an apocalyptic number.

It is an amenable number.

2505805505 is a deficient number, since it is larger than the sum of its proper divisors (930727807).

2505805505 is an equidigital number, since it uses as much as digits as its factorization.

2505805505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71594455.

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 2505805505 is about 50058.0213851886. The cubic root of 2505805505 is about 1358.2585671353.

The spelling of 2505805505 in words is "two billion, five hundred five million, eight hundred five thousand, five hundred five".