80525785833 has 12 divisors (see below), whose sum is σ = 116480960388. Its totient is φ = 53607271200.

The previous prime is 80525785831. The next prime is 80525785841. The reversal of 80525785833 is 33858752508.

It is a happy number.

80525785833 is a `hidden beast` number, since 8 + 0 + 5 + 2 + 57 + 8 + 583 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61935281424 + 18590504409 = 248868^2 + 136347^2 .

It is not a de Polignac number, because 80525785833 - 2¹ = 80525785831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80525785833.

It is not an unprimeable number, because it can be changed into a prime (80525785831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6375510 + ... + 6388127.

It is an arithmetic number, because the mean of its divisors is an integer number (9706746699).

Almost surely, 2^80525785833 is an apocalyptic number.

It is an amenable number.

80525785833 is a deficient number, since it is larger than the sum of its proper divisors (35955174555).

80525785833 is a wasteful number, since it uses less digits than its factorization.

80525785833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12764344 (or 12764341 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 80525785833 in words is "eighty billion, five hundred twenty-five million, seven hundred eighty-five thousand, eight hundred thirty-three".