80547925 has 6 divisors (see below), whose sum is σ = 99879458. Its totient is φ = 64438320.

The previous prime is 80547923. The next prime is 80547977. The reversal of 80547925 is 52974508.

It can be written as a sum of positive squares in 3 ways, for example, as 26481316 + 54066609 = 5146^2 + 7353^2 .

It is not a de Polignac number, because 80547925 - 2¹ = 80547923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80547923) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1610934 + ... + 1610983.

Almost surely, 2^80547925 is an apocalyptic number.

It is an amenable number.

80547925 is a deficient number, since it is larger than the sum of its proper divisors (19331533).

80547925 is a wasteful number, since it uses less digits than its factorization.

80547925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221927 (or 3221922 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 80547925 is about 8974.8495809122. The cubic root of 80547925 is about 431.8684245074.

The spelling of 80547925 in words is "eighty million, five hundred forty-seven thousand, nine hundred twenty-five".