8425220522 has 4 divisors (see below), whose sum is σ = 12637830786. Its totient is φ = 4212610260.

The previous prime is 8425220501. The next prime is 8425220537. The reversal of 8425220522 is 2250225248.

It is a Cunningham number, because it is equal to 91789²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 8425220521 + 1 = 91789^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106305129 + ... + 2106305132.

Almost surely, 2^8425220522 is an apocalyptic number.

8425220522 is a deficient number, since it is larger than the sum of its proper divisors (4212610264).

8425220522 is a wasteful number, since it uses less digits than its factorization.

8425220522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212610263.

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 8425220522 is about 91789.0000054473. Note that the first 5 decimals coincide. The cubic root of 8425220522 is about 2034.8251290633.

The spelling of 8425220522 in words is "eight billion, four hundred twenty-five million, two hundred twenty thousand, five hundred twenty-two".