2125342435213 has 4 divisors (see below), whose sum is σ = 2125362790588. Its totient is φ = 2125322079840.

The previous prime is 2125342435207. The next prime is 2125342435253. The reversal of 2125342435213 is 3125342435212.

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 1043496981289 + 1081845453924 = 1021517^2 + 1040118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125342435213 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 (2125342435253) 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, 10020258 + ... + 10230163.

It is an arithmetic number, because the mean of its divisors is an integer number (531340697647).

Almost surely, 2^{2125342435213} is an apocalyptic number.

It is an amenable number.

2125342435213 is a deficient number, since it is larger than the sum of its proper divisors (20355375).

2125342435213 is a wasteful number, since it uses less digits than its factorization.

2125342435213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20355374.

The product of its digits is 172800, while the sum is 37.

Subtracting 2125342435213 from its reverse (3125342435212), we obtain a palindrome (999999999999).

The spelling of 2125342435213 in words is "two trillion, one hundred twenty-five billion, three hundred forty-two million, four hundred thirty-five thousand, two hundred thirteen".