80556769025 has 24 divisors (see below), whose sum is σ = 100103831040. Its totient is φ = 64307900160.

The previous prime is 80556769021. The next prime is 80556769061. The reversal of 80556769025 is 52096765508.

It is not a de Polignac number, because 80556769025 - 2² = 80556769021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80556769021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 36499472 + ... + 36501678.

It is an arithmetic number, because the mean of its divisors is an integer number (4170992960).

Almost surely, 2^80556769025 is an apocalyptic number.

It is an amenable number.

80556769025 is a deficient number, since it is larger than the sum of its proper divisors (19547062015).

80556769025 is a wasteful number, since it uses less digits than its factorization.

80556769025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 80556769025 in words is "eighty billion, five hundred fifty-six million, seven hundred sixty-nine thousand, twenty-five".