80425665 has 12 divisors (see below), whose sum is σ = 139404564. Its totient is φ = 42893664.

The previous prime is 80425649. The next prime is 80425699. The reversal of 80425665 is 56652408.

It can be written as a sum of positive squares in 2 ways, for example, as 19210689 + 61214976 = 4383^2 + 7824^2 .

It is not a de Polignac number, because 80425665 - 2⁴ = 80425649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 893574 + ... + 893663.

It is an arithmetic number, because the mean of its divisors is an integer number (11617047).

Almost surely, 2^80425665 is an apocalyptic number.

It is an amenable number.

80425665 is a deficient number, since it is larger than the sum of its proper divisors (58978899).

80425665 is a wasteful number, since it uses less digits than its factorization.

80425665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787248 (or 1787245 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 80425665 is about 8968.0357381090. The cubic root of 80425665 is about 431.6498094386.

The spelling of 80425665 in words is "eighty million, four hundred twenty-five thousand, six hundred sixty-five".