2125366811 has 4 divisors (see below), whose sum is σ = 2125497000. Its totient is φ = 2125236624.

The previous prime is 2125366801. The next prime is 2125366849. The reversal of 2125366811 is 1186635212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125366811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125366801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36386 + ... + 74663.

It is an arithmetic number, because the mean of its divisors is an integer number (531374250).

Almost surely, 2^2125366811 is an apocalyptic number.

2125366811 is a deficient number, since it is larger than the sum of its proper divisors (130189).

2125366811 is a wasteful number, since it uses less digits than its factorization.

2125366811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130188.

The product of its digits is 17280, while the sum is 35.

The square root of 2125366811 is about 46101.7007386929. The cubic root of 2125366811 is about 1285.7147655336.

The spelling of 2125366811 in words is "two billion, one hundred twenty-five million, three hundred sixty-six thousand, eight hundred eleven".