8625281 has 4 divisors (see below), whose sum is σ = 9857472. Its totient is φ = 7393092.

The previous prime is 8625263. The next prime is 8625289. The reversal of 8625281 is 1825268.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-8625281 is a prime.

It is a super-2 number, since 2×8625281² = 148790944657922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8625289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616085 + ... + 616098.

It is an arithmetic number, because the mean of its divisors is an integer number (2464368).

Almost surely, 2^8625281 is an apocalyptic number.

It is an amenable number.

8625281 is a deficient number, since it is larger than the sum of its proper divisors (1232191).

8625281 is a wasteful number, since it uses less digits than its factorization.

8625281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232190.

The product of its digits is 7680, while the sum is 32.

The square root of 8625281 is about 2936.8828713451. The cubic root of 8625281 is about 205.0805235914.

The spelling of 8625281 in words is "eight million, six hundred twenty-five thousand, two hundred eighty-one".