8225189059621 has 4 divisors (see below), whose sum is σ = 8226006601644. Its totient is φ = 8224371517600.

The previous prime is 8225189059609. The next prime is 8225189059643. The reversal of 8225189059621 is 1269509815228.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1521310095396 + 6703878964225 = 1233414^2 + 2589185^2 .

It is a cyclic number.

It is not a de Polignac number, because 8225189059621 - 2¹⁷ = 8225188928549 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 (8225189059601) 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, 408755920 + ... + 408776041.

It is an arithmetic number, because the mean of its divisors is an integer number (2056501650411).

Almost surely, 2^{8225189059621} is an apocalyptic number.

It is an amenable number.

8225189059621 is a deficient number, since it is larger than the sum of its proper divisors (817542023).

8225189059621 is a wasteful number, since it uses less digits than its factorization.

8225189059621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817542022.

The product of its (nonzero) digits is 6220800, while the sum is 58.

The spelling of 8225189059621 in words is "eight trillion, two hundred twenty-five billion, one hundred eighty-nine million, fifty-nine thousand, six hundred twenty-one".