205002125 has 8 divisors (see below), whose sum is σ = 255842808. Its totient is φ = 164001600.

The previous prime is 205002121. The next prime is 205002137. The reversal of 205002125 is 521200502.

It can be written as a sum of positive squares in 4 ways, for example, as 24314761 + 180687364 = 4931^2 + 13442^2 .

It is not a de Polignac number, because 205002125 - 2² = 205002121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205002121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819884 + ... + 820133.

It is an arithmetic number, because the mean of its divisors is an integer number (31980351).

Almost surely, 2^205002125 is an apocalyptic number.

205002125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205002125 is a deficient number, since it is larger than the sum of its proper divisors (50840683).

205002125 is an equidigital number, since it uses as much as digits as its factorization.

205002125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640032 (or 1640022 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 205002125 is about 14317.8952713030. The cubic root of 205002125 is about 589.6388913531.

Adding to 205002125 its reverse (521200502), we get a palindrome (726202627).

The spelling of 205002125 in words is "two hundred five million, two thousand, one hundred twenty-five".