8638025 has 24 divisors (see below), whose sum is σ = 11838528. Its totient is φ = 6200000.

The previous prime is 8637991. The next prime is 8638033. The reversal of 8638025 is 5208368.

8638025 is nontrivially palindromic in base 6.

It is a de Polignac number, because none of the positive numbers 2^k-8638025 is a prime.

It is a Duffinian number.

8638025 is an undulating number in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 8637982 and 8638000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27620 + ... + 27930.

It is an arithmetic number, because the mean of its divisors is an integer number (493272).

Almost surely, 2^8638025 is an apocalyptic number.

It is an amenable number.

8638025 is a deficient number, since it is larger than the sum of its proper divisors (3200503).

8638025 is a wasteful number, since it uses less digits than its factorization.

8638025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 8638025 is about 2939.0517178165. The cubic root of 8638025 is about 205.1814772130.

It can be divided in two parts, 863 and 8025, that added together give a palindrome (8888).

The spelling of 8638025 in words is "eight million, six hundred thirty-eight thousand, twenty-five".