8215519425 has 24 divisors (see below), whose sum is σ = 13603623360. Its totient is φ = 4374955200.

The previous prime is 8215519337. The next prime is 8215519439. The reversal of 8215519425 is 5249155128.

It is not a de Polignac number, because 8215519425 - 2¹³ = 8215511233 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 33285 + ... + 132434.

It is an arithmetic number, because the mean of its divisors is an integer number (566817640).

Almost surely, 2^8215519425 is an apocalyptic number.

It is an amenable number.

8215519425 is a deficient number, since it is larger than the sum of its proper divisors (5388103935).

8215519425 is a wasteful number, since it uses less digits than its factorization.

8215519425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166393 (or 166388 counting only the distinct ones).

The product of its digits is 144000, while the sum is 42.

The square root of 8215519425 is about 90639.5025637277. The cubic root of 8215519425 is about 2017.8010434474.

The spelling of 8215519425 in words is "eight billion, two hundred fifteen million, five hundred nineteen thousand, four hundred twenty-five".