6665022505 has 8 divisors (see below), whose sum is σ = 7999259400. Its totient is φ = 5331196416.

The previous prime is 6665022493. The next prime is 6665022517. The reversal of 6665022505 is 5052205666.

It is an interprime number because it is at equal distance from previous prime (6665022493) and next prime (6665022517).

It can be written as a sum of positive squares in 4 ways, for example, as 398241936 + 6266780569 = 19956^2 + 79163^2 .

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 6665022505 - 2¹¹ = 6665020457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65800 + ... + 132889.

It is an arithmetic number, because the mean of its divisors is an integer number (999907425).

Almost surely, 2^6665022505 is an apocalyptic number.

It is an amenable number.

6665022505 is a deficient number, since it is larger than the sum of its proper divisors (1334236895).

6665022505 is a wasteful number, since it uses less digits than its factorization.

6665022505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205403.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 6665022505 is about 81639.5890790736. The cubic root of 6665022505 is about 1881.9173235044.

The spelling of 6665022505 in words is "six billion, six hundred sixty-five million, twenty-two thousand, five hundred five".