2125805265 has 12 divisors (see below), whose sum is σ = 3684729204. Its totient is φ = 1133762784.

The previous prime is 2125805263. The next prime is 2125805267. The reversal of 2125805265 is 5625085212.

It is a happy number.

2125805265 is a `hidden beast` number, since 2 + 12 + 580 + 5 + 2 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (2125805263) and next prime (2125805267).

It can be written as a sum of positive squares in 2 ways, for example, as 1259327169 + 866478096 = 35487^2 + 29436^2 .

It is not a de Polignac number, because 2125805265 - 2¹ = 2125805263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2125805263) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 23620014 + ... + 23620103.

It is an arithmetic number, because the mean of its divisors is an integer number (307060767).

Almost surely, 2^2125805265 is an apocalyptic number.

It is an amenable number.

2125805265 is a deficient number, since it is larger than the sum of its proper divisors (1558923939).

2125805265 is a wasteful number, since it uses less digits than its factorization.

2125805265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47240128 (or 47240125 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 2125805265 is about 46106.4557844127. The cubic root of 2125805265 is about 1285.8031719236.

The spelling of 2125805265 in words is "two billion, one hundred twenty-five million, eight hundred five thousand, two hundred sixty-five".