80658840025 has 27 divisors (see below), whose sum is σ = 101440109631. Its totient is φ = 63621664080.

The previous prime is 80658839993. The next prime is 80658840037. The reversal of 80658840025 is 52004885608.

The square root of 80658840025 is 284005.

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., 29037182409 + 51621657616 = 170403^2 + 227204^2 .

It is not a de Polignac number, because 80658840025 - 2⁵ = 80658839993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112181616 + ... + 112182334.

Almost surely, 2^80658840025 is an apocalyptic number.

80658840025 is the 284005-th square number.

80658840025 is the 142003-rd centered octagonal number.

It is an amenable number.

80658840025 is a deficient number, since it is larger than the sum of its proper divisors (20781269606).

80658840025 is an frugal number, since it uses more digits than its factorization.

80658840025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 80658840025 in words is "eighty billion, six hundred fifty-eight million, eight hundred forty thousand, twenty-five".