80698605625 has 45 divisors (see below), whose sum is σ = 110949140379. Its totient is φ = 58633080000.

The previous prime is 80698605607. The next prime is 80698605641. The reversal of 80698605625 is 52650689608.

The square root of 80698605625 is 284075.

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

It can be written as a sum of positive squares in 7 ways, for example, as 16600518649 + 64098086976 = 128843^2 + 253176^2 .

It is not a de Polignac number, because 80698605625 - 2³¹ = 78551121977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 78120109 + ... + 78121141.

Almost surely, 2^80698605625 is an apocalyptic number.

80698605625 is the 284075-th square number.

80698605625 is the 142038-th centered octagonal number.

It is an amenable number.

80698605625 is a deficient number, since it is larger than the sum of its proper divisors (30250534754).

80698605625 is an frugal number, since it uses more digits than its factorization.

80698605625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 80698605625 in words is "eighty billion, six hundred ninety-eight million, six hundred five thousand, six hundred twenty-five".