195250005 has 18 divisors (see below), whose sum is σ = 338595894. Its totient is φ = 104083344.

The previous prime is 195249983. The next prime is 195250019. The reversal of 195250005 is 500052591.

It can be written as a sum of positive squares in only one way, i.e., 156200004 + 39050001 = 12498^2 + 6249^2 .

It is not a de Polignac number, because 195250005 - 2⁵ = 195249973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 92694 + ... + 94776.

It is an arithmetic number, because the mean of its divisors is an integer number (18810883).

Almost surely, 2^195250005 is an apocalyptic number.

195250005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195250005 is a deficient number, since it is larger than the sum of its proper divisors (143345889).

195250005 is an frugal number, since it uses more digits than its factorization.

195250005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 195250005 is about 13973.1887913962. The cubic root of 195250005 is about 580.1367147000.

The spelling of 195250005 in words is "one hundred ninety-five million, two hundred fifty thousand, five".