12542155253 has 4 divisors (see below), whose sum is σ = 12881132460. Its totient is φ = 12203178048.

The previous prime is 12542155217. The next prime is 12542155259. The reversal of 12542155253 is 35255124521.

It is a happy number.

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 5273228689 + 7268926564 = 72617^2 + 85258^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542155253 - 2¹² = 12542151157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542155259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169488548 + ... + 169488621.

It is an arithmetic number, because the mean of its divisors is an integer number (3220283115).

Almost surely, 2^12542155253 is an apocalyptic number.

It is an amenable number.

12542155253 is a deficient number, since it is larger than the sum of its proper divisors (338977207).

12542155253 is an equidigital number, since it uses as much as digits as its factorization.

12542155253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338977206.

The product of its digits is 60000, while the sum is 35.

Adding to 12542155253 its reverse (35255124521), we get a palindrome (47797279774).

The spelling of 12542155253 in words is "twelve billion, five hundred forty-two million, one hundred fifty-five thousand, two hundred fifty-three".