12737525557 has 4 divisors (see below), whose sum is σ = 13291331040. Its totient is φ = 12183720076.

The previous prime is 12737525531. The next prime is 12737525569. The reversal of 12737525557 is 75552573721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75552573721 = 479 ⋅157729799.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12737525557 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12737525557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12737525057) 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, 276902707 + ... + 276902752.

It is an arithmetic number, because the mean of its divisors is an integer number (3322832760).

Almost surely, 2^12737525557 is an apocalyptic number.

It is an amenable number.

12737525557 is a deficient number, since it is larger than the sum of its proper divisors (553805483).

12737525557 is an equidigital number, since it uses as much as digits as its factorization.

12737525557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553805482.

The product of its digits is 2572500, while the sum is 49.

The spelling of 12737525557 in words is "twelve billion, seven hundred thirty-seven million, five hundred twenty-five thousand, five hundred fifty-seven".