8025219845 has 6 divisors (see below), whose sum is σ = 9630504198. Its totient is φ = 6420015624.

The previous prime is 8025219827. The next prime is 8025219847. The reversal of 8025219845 is 5489125208.

It can be written as a sum of positive squares in only one way, i.e., 6420175876 + 1605043969 = 80126^2 + 40063^2 .

It is not a de Polignac number, because 8025219845 - 2¹² = 8025215749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8025219796 and 8025219805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8025219847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180284 + ... + 220346.

It is an arithmetic number, because the mean of its divisors is an integer number (1605084033).

Almost surely, 2^8025219845 is an apocalyptic number.

It is an amenable number.

8025219845 is a deficient number, since it is larger than the sum of its proper divisors (1605284353).

8025219845 is an frugal number, since it uses more digits than its factorization.

8025219845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80131 (or 40068 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 8025219845 is about 89583.5913825741. The cubic root of 8025219845 is about 2002.0994491355.

The spelling of 8025219845 in words is "eight billion, twenty-five million, two hundred nineteen thousand, eight hundred forty-five".