80897580625 has 45 divisors (see below), whose sum is σ = 104741160381. Its totient is φ = 62459730000.

The previous prime is 80897580623. The next prime is 80897580649. The reversal of 80897580625 is 52608579808.

The square root of 80897580625 is 284425.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6342370321 + 74555210304 = 79639^2 + 273048^2 .

It is not a de Polignac number, because 80897580625 - 2¹ = 80897580623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80897580625.

It is not an unprimeable number, because it can be changed into a prime (80897580623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 220429192 + ... + 220429558.

Almost surely, 2^80897580625 is an apocalyptic number.

80897580625 is the 284425-th square number.

80897580625 is the 142213-rd centered octagonal number.

It is an amenable number.

80897580625 is a deficient number, since it is larger than the sum of its proper divisors (23843579756).

80897580625 is an frugal number, since it uses more digits than its factorization.

80897580625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 80897580625 in words is "eighty billion, eight hundred ninety-seven million, five hundred eighty thousand, six hundred twenty-five".