12025421061613 has 4 divisors (see below), whose sum is σ = 12102016100380. Its totient is φ = 11948826022848.

The previous prime is 12025421061607. The next prime is 12025421061637. The reversal of 12025421061613 is 31616012452021.

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 8919074736324 + 3106346325289 = 2986482^2 + 1762483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12025421061613 is a prime.

It is a super-2 number, since 2×12025421061613² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025401061613) 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, 38297519148 + ... + 38297519461.

It is an arithmetic number, because the mean of its divisors is an integer number (3025504025095).

Almost surely, 2^{12025421061613} is an apocalyptic number.

It is an amenable number.

12025421061613 is a deficient number, since it is larger than the sum of its proper divisors (76595038767).

12025421061613 is an equidigital number, since it uses as much as digits as its factorization.

12025421061613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76595038766.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 12025421061613 in words is "twelve trillion, twenty-five billion, four hundred twenty-one million, sixty-one thousand, six hundred thirteen".