80825921401 has 9 divisors (see below), whose sum is σ = 81619081999. Its totient is φ = 80040403264.

The previous prime is 80825921387. The next prime is 80825921441. The reversal of 80825921401 is 10412952808.

The square root of 80825921401 is 284299.

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., 52677135225 + 28148786176 = 229515^2 + 167776^2 .

It is not a de Polignac number, because 80825921401 - 2¹³ = 80825913209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80825921441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30418665 + ... + 30421321.

Almost surely, 2^80825921401 is an apocalyptic number.

80825921401 is the 284299-th square number.

80825921401 is the 142150-th centered octagonal number.

It is an amenable number.

80825921401 is a deficient number, since it is larger than the sum of its proper divisors (793160598).

80825921401 is an frugal number, since it uses more digits than its factorization.

80825921401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528 (or 2764 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 80825921401 in words is "eighty billion, eight hundred twenty-five million, nine hundred twenty-one thousand, four hundred one".