8235921825 has 36 divisors (see below), whose sum is σ = 14938210560. Its totient is φ = 4336881120.

The previous prime is 8235921821. The next prime is 8235921833. The reversal of 8235921825 is 5281295328.

8235921825 is a `hidden beast` number, since 8 + 23 + 592 + 18 + 25 = 666.

It is not a de Polignac number, because 8235921825 - 2² = 8235921821 is a prime.

It is a super-2 number, since 2×8235921825² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (8235921821) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 213897 + ... + 249446.

Almost surely, 2^8235921825 is an apocalyptic number.

It is an amenable number.

8235921825 is a deficient number, since it is larger than the sum of its proper divisors (6702288735).

8235921825 is a wasteful number, since it uses less digits than its factorization.

8235921825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463438 (or 463430 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 8235921825 is about 90751.9797304720. The cubic root of 8235921825 is about 2019.4699966403.

The spelling of 8235921825 in words is "eight billion, two hundred thirty-five million, nine hundred twenty-one thousand, eight hundred twenty-five".