8251005 has 32 divisors (see below), whose sum is σ = 15206400. Its totient is φ = 3742272.

The previous prime is 8250989. The next prime is 8251013. The reversal of 8251005 is 5001528.

8251005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8251005 - 2⁴ = 8250989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18576 + ... + 19014.

It is an arithmetic number, because the mean of its divisors is an integer number (475200).

Almost surely, 2^8251005 is an apocalyptic number.

It is an amenable number.

8251005 is a deficient number, since it is larger than the sum of its proper divisors (6955395).

8251005 is a wasteful number, since it uses less digits than its factorization.

8251005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 8251005 is about 2872.4562659856. The cubic root of 8251005 is about 202.0702056398.

It can be divided in two parts, 825 and 1005, that added together give a triangular number (1830 = T₆₀).

The spelling of 8251005 in words is "eight million, two hundred fifty-one thousand, five".