80999325 has 48 divisors (see below), whose sum is σ = 162340800. Its totient is φ = 39268800.

The previous prime is 80999309. The next prime is 80999329. The reversal of 80999325 is 52399908.

It is not a de Polignac number, because 80999325 - 2⁴ = 80999309 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80999329) 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 47 ways as a sum of consecutive naturals, for example, 1971 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (3382100).

Almost surely, 2^80999325 is an apocalyptic number.

It is an amenable number.

80999325 is an abundant number, since it is smaller than the sum of its proper divisors (81341475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80999325 is a wasteful number, since it uses less digits than its factorization.

80999325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10939 (or 10928 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 80999325 is about 8999.9624999219. The cubic root of 80999325 is about 432.6736692142.

It can be divided in two parts, 809993 and 25, that added together give a palindrome (810018).

The spelling of 80999325 in words is "eighty million, nine hundred ninety-nine thousand, three hundred twenty-five".