2125001813 has 16 divisors (see below), whose sum is σ = 2354614272. Its totient is φ = 1901550000.

The previous prime is 2125001807. The next prime is 2125001831. The reversal of 2125001813 is 3181005212.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125001813 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 (2125001863) 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, 584720 + ... + 588342.

It is an arithmetic number, because the mean of its divisors is an integer number (147163392).

Almost surely, 2^2125001813 is an apocalyptic number.

It is an amenable number.

2125001813 is a deficient number, since it is larger than the sum of its proper divisors (229612459).

2125001813 is a wasteful number, since it uses less digits than its factorization.

2125001813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2125001813 is about 46097.7419512062. The cubic root of 2125001813 is about 1285.6411609552.

The spelling of 2125001813 in words is "two billion, one hundred twenty-five million, one thousand, eight hundred thirteen".