12325391557 has 4 divisors (see below), whose sum is σ = 12357573120. Its totient is φ = 12293209996.

The previous prime is 12325391549. The next prime is 12325391579. The reversal of 12325391557 is 75519352321.

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.

It is a cyclic number.

It is not a de Polignac number, because 12325391557 - 2³ = 12325391549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12325391597) 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, 16090207 + ... + 16090972.

It is an arithmetic number, because the mean of its divisors is an integer number (3089393280).

Almost surely, 2^12325391557 is an apocalyptic number.

It is an amenable number.

12325391557 is a deficient number, since it is larger than the sum of its proper divisors (32181563).

12325391557 is an equidigital number, since it uses as much as digits as its factorization.

12325391557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32181562.

The product of its digits is 283500, while the sum is 43.

The spelling of 12325391557 in words is "twelve billion, three hundred twenty-five million, three hundred ninety-one thousand, five hundred fifty-seven".