200911925825 has 24 divisors (see below), whose sum is σ = 268350308856. Its totient is φ = 148334976000.

The previous prime is 200911925821. The next prime is 200911925833. The reversal of 200911925825 is 528529119002.

It is a Cunningham number, because it is equal to 448232²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 15751254016 + 185160671809 = 125504^2 + 430303^2 .

It is not a de Polignac number, because 200911925825 - 2² = 200911925821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200911925821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1570265 + ... + 1693385.

It is an arithmetic number, because the mean of its divisors is an integer number (11181262869).

Almost surely, 2^200911925825 is an apocalyptic number.

200911925825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

200911925825 is a deficient number, since it is larger than the sum of its proper divisors (67438383031).

200911925825 is a wasteful number, since it uses less digits than its factorization.

200911925825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128165 (or 128160 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 200911925825 in words is "two hundred billion, nine hundred eleven million, nine hundred twenty-five thousand, eight hundred twenty-five".