80545278025 has 27 divisors (see below), whose sum is σ = 103258279719. Its totient is φ = 62323578000.

The previous prime is 80545278019. The next prime is 80545278041. The reversal of 80545278025 is 52087254508.

The square root of 80545278025 is 283805.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28996300089 + 51548977936 = 170283^2 + 227044^2 .

It is not a de Polignac number, because 80545278025 - 2⁹ = 80545277513 is a prime.

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 26 ways as a sum of consecutive naturals, for example, 43988860 + ... + 43990690.

Almost surely, 2^80545278025 is an apocalyptic number.

80545278025 is the 283805-th square number.

80545278025 is the 141903-rd centered octagonal number.

It is an amenable number.

80545278025 is a deficient number, since it is larger than the sum of its proper divisors (22713001694).

80545278025 is an frugal number, since it uses more digits than its factorization.

80545278025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 46.

The spelling of 80545278025 in words is "eighty billion, five hundred forty-five million, two hundred seventy-eight thousand, twenty-five".