12011320025 has 12 divisors (see below), whose sum is σ = 15257307324. Its totient is φ = 9374688000.

The previous prime is 12011320019. The next prime is 12011320031. The reversal of 12011320025 is 52002311021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12011320019) and next prime (12011320031).

It can be written as a sum of positive squares in 6 ways, for example, as 622801936 + 11388518089 = 24956^2 + 106717^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12011320025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011319985 and 12011320012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5858156 + ... + 5860205.

It is an arithmetic number, because the mean of its divisors is an integer number (1271442277).

Almost surely, 2^12011320025 is an apocalyptic number.

It is an amenable number.

12011320025 is a deficient number, since it is larger than the sum of its proper divisors (3245987299).

12011320025 is a wasteful number, since it uses less digits than its factorization.

12011320025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11718412 (or 11718407 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 12011320025 its reverse (52002311021), we get a palindrome (64013631046).

The spelling of 12011320025 in words is "twelve billion, eleven million, three hundred twenty thousand, twenty-five".