208925005 has 8 divisors (see below), whose sum is σ = 250860024. Its totient is φ = 167040000.

The previous prime is 208924997. The next prime is 208925021. The reversal of 208925005 is 500529802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27941796 + 180983209 = 5286^2 + 13453^2 .

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

It is not a de Polignac number, because 208925005 - 2³ = 208924997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2596 + ... + 20605.

It is an arithmetic number, because the mean of its divisors is an integer number (31357503).

Almost surely, 2^208925005 is an apocalyptic number.

It is an amenable number.

208925005 is a deficient number, since it is larger than the sum of its proper divisors (41935019).

208925005 is a wasteful number, since it uses less digits than its factorization.

208925005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 208925005 is about 14454.2383057704. The cubic root of 208925005 is about 593.3762237718.

The spelling of 208925005 in words is "two hundred eight million, nine hundred twenty-five thousand, five".