2125786065 has 16 divisors (see below), whose sum is σ = 3662893248. Its totient is φ = 1046540736.

The previous prime is 2125786057. The next prime is 2125786067. The reversal of 2125786065 is 5606875212.

It is not a de Polignac number, because 2125786065 - 2³ = 2125786057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2125786067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5450539 + ... + 5450928.

It is an arithmetic number, because the mean of its divisors is an integer number (228930828).

Almost surely, 2^2125786065 is an apocalyptic number.

It is an amenable number.

2125786065 is a deficient number, since it is larger than the sum of its proper divisors (1537107183).

2125786065 is a wasteful number, since it uses less digits than its factorization.

2125786065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901488.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 2125786065 is about 46106.2475701504. The cubic root of 2125786065 is about 1285.7993008423.

The spelling of 2125786065 in words is "two billion, one hundred twenty-five million, seven hundred eighty-six thousand, sixty-five".