12825551807 has 4 divisors (see below), whose sum is σ = 13098435936. Its totient is φ = 12552667680.

The previous prime is 12825551797. The next prime is 12825551831. The reversal of 12825551807 is 70815552821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12825551807 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 (12825551887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136441994 + ... + 136442087.

It is an arithmetic number, because the mean of its divisors is an integer number (3274608984).

Almost surely, 2^12825551807 is an apocalyptic number.

12825551807 is a deficient number, since it is larger than the sum of its proper divisors (272884129).

12825551807 is an equidigital number, since it uses as much as digits as its factorization.

12825551807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272884128.

The product of its (nonzero) digits is 224000, while the sum is 44.

The spelling of 12825551807 in words is "twelve billion, eight hundred twenty-five million, five hundred fifty-one thousand, eight hundred seven".