200145125 has 8 divisors (see below), whose sum is σ = 249781272. Its totient is φ = 160116000.

The previous prime is 200145109. The next prime is 200145167. The reversal of 200145125 is 521541002.

It can be written as a sum of positive squares in 4 ways, for example, as 33373729 + 166771396 = 5777^2 + 12914^2 .

It is not a de Polignac number, because 200145125 - 2⁴ = 200145109 is a prime.

It is a super-2 number, since 2×200145125² = 80116142122531250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200145097 and 200145106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800456 + ... + 800705.

It is an arithmetic number, because the mean of its divisors is an integer number (31222659).

Almost surely, 2^200145125 is an apocalyptic number.

200145125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

200145125 is a deficient number, since it is larger than the sum of its proper divisors (49636147).

200145125 is an equidigital number, since it uses as much as digits as its factorization.

200145125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601176 (or 1601166 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 200145125 is about 14147.2656368642. The cubic root of 200145125 is about 584.9449628014.

Adding to 200145125 its reverse (521541002), we get a palindrome (721686127).

The spelling of 200145125 in words is "two hundred million, one hundred forty-five thousand, one hundred twenty-five".