12525375657 has 4 divisors (see below), whose sum is σ = 16700500880. Its totient is φ = 8350250436.

The previous prime is 12525375637. The next prime is 12525375713. The reversal of 12525375657 is 75657352521.

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 not a de Polignac number, because 12525375657 - 2⁶ = 12525375593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12525375637) 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, 2087562607 + ... + 2087562612.

It is an arithmetic number, because the mean of its divisors is an integer number (4175125220).

Almost surely, 2^12525375657 is an apocalyptic number.

It is an amenable number.

12525375657 is a deficient number, since it is larger than the sum of its proper divisors (4175125223).

12525375657 is an equidigital number, since it uses as much as digits as its factorization.

12525375657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175125222.

The product of its digits is 2205000, while the sum is 48.

The spelling of 12525375657 in words is "twelve billion, five hundred twenty-five million, three hundred seventy-five thousand, six hundred fifty-seven".