8523420825 has 24 divisors (see below), whose sum is σ = 14472926848. Its totient is φ = 4422962880.

The previous prime is 8523420821. The next prime is 8523420859. The reversal of 8523420825 is 5280243258.

It is not a de Polignac number, because 8523420825 - 2² = 8523420821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8523420821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532977 + ... + 1538526.

Almost surely, 2^8523420825 is an apocalyptic number.

It is an amenable number.

8523420825 is a deficient number, since it is larger than the sum of its proper divisors (5949506023).

8523420825 is a wasteful number, since it uses less digits than its factorization.

8523420825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071553 (or 3071548 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

The square root of 8523420825 is about 92322.3744549500. The cubic root of 8523420825 is about 2042.7002580724.

The spelling of 8523420825 in words is "eight billion, five hundred twenty-three million, four hundred twenty thousand, eight hundred twenty-five".