206253005 has 12 divisors (see below), whose sum is σ = 287912700. Its totient is φ = 141430464.

The previous prime is 206252989. The next prime is 206253031. The reversal of 206253005 is 500352602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 152127556 + 54125449 = 12334^2 + 7357^2 .

It is not a de Polignac number, because 206253005 - 2⁴ = 206252989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420680 + ... + 421169.

It is an arithmetic number, because the mean of its divisors is an integer number (23992725).

Almost surely, 2^206253005 is an apocalyptic number.

It is an amenable number.

206253005 is a deficient number, since it is larger than the sum of its proper divisors (81659695).

206253005 is an equidigital number, since it uses as much as digits as its factorization.

206253005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841868 (or 841861 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 206253005 is about 14361.5112366352. The cubic root of 206253005 is about 590.8357446385.

The spelling of 206253005 in words is "two hundred six million, two hundred fifty-three thousand, five".