8221419025 has 6 divisors (see below), whose sum is σ = 10194559622. Its totient is φ = 6577135200.

The previous prime is 8221419007. The next prime is 8221419053. The reversal of 8221419025 is 5209141228.

It can be written as a sum of positive squares in 3 ways, for example, as 1354313601 + 6867105424 = 36801^2 + 82868^2 .

It is not a de Polignac number, because 8221419025 - 2⁵ = 8221418993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164428356 + ... + 164428405.

Almost surely, 2^8221419025 is an apocalyptic number.

It is an amenable number.

8221419025 is a deficient number, since it is larger than the sum of its proper divisors (1973140597).

8221419025 is a wasteful number, since it uses less digits than its factorization.

8221419025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328856771 (or 328856766 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8221419025 is about 90672.0410325035. The cubic root of 8221419025 is about 2018.2839250956.

The spelling of 8221419025 in words is "eight billion, two hundred twenty-one million, four hundred nineteen thousand, twenty-five".