2125634837 has 4 divisors (see below), whose sum is σ = 2198932620. Its totient is φ = 2052337056.

The previous prime is 2125634813. The next prime is 2125634839. The reversal of 2125634837 is 7384365212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 414488881 + 1711145956 = 20359^2 + 41366^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125634837 - 2¹⁰ = 2125633813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2125634794 and 2125634803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125634839) 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, 36648848 + ... + 36648905.

It is an arithmetic number, because the mean of its divisors is an integer number (549733155).

Almost surely, 2^2125634837 is an apocalyptic number.

It is an amenable number.

2125634837 is a deficient number, since it is larger than the sum of its proper divisors (73297783).

2125634837 is an equidigital number, since it uses as much as digits as its factorization.

2125634837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73297782.

The product of its digits is 241920, while the sum is 41.

The square root of 2125634837 is about 46104.6075463180. The cubic root of 2125634837 is about 1285.7688096166.

The spelling of 2125634837 in words is "two billion, one hundred twenty-five million, six hundred thirty-four thousand, eight hundred thirty-seven".