12252040445 has 4 divisors (see below), whose sum is σ = 14702448540. Its totient is φ = 9801632352.

The previous prime is 12252040433. The next prime is 12252040501. The reversal of 12252040445 is 54404025221.

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 1673300836 + 10578739609 = 40906^2 + 102853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12252040445 is a prime.

It is a super-2 number, since 2×12252040445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225204040 + ... + 1225204049.

It is an arithmetic number, because the mean of its divisors is an integer number (3675612135).

Almost surely, 2^12252040445 is an apocalyptic number.

It is an amenable number.

12252040445 is a deficient number, since it is larger than the sum of its proper divisors (2450408095).

12252040445 is an equidigital number, since it uses as much as digits as its factorization.

12252040445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450408094.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 12252040445 its reverse (54404025221), we get a palindrome (66656065666).

The spelling of 12252040445 in words is "twelve billion, two hundred fifty-two million, forty thousand, four hundred forty-five".