1125200205 has 24 divisors (see below), whose sum is σ = 1982324760. Its totient is φ = 590267520.

The previous prime is 1125200161. The next prime is 1125200213. The reversal of 1125200205 is 5020025211.

It can be written as a sum of positive squares in 4 ways, for example, as 19105641 + 1106094564 = 4371^2 + 33258^2 .

It is not a de Polignac number, because 1125200205 - 2¹⁰ = 1125199181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202210 + ... + 207699.

It is an arithmetic number, because the mean of its divisors is an integer number (82596865).

Almost surely, 2^1125200205 is an apocalyptic number.

1125200205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125200205 is a deficient number, since it is larger than the sum of its proper divisors (857124555).

1125200205 is a wasteful number, since it uses less digits than its factorization.

1125200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409981 (or 409978 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1125200205 is about 33544.0040096587. The cubic root of 1125200205 is about 1040.1036031527.

Adding to 1125200205 its reverse (5020025211), we get a palindrome (6145225416).

The spelling of 1125200205 in words is "one billion, one hundred twenty-five million, two hundred thousand, two hundred five".