77825223781085 has 8 divisors (see below), whose sum is σ = 101880292949856. Its totient is φ = 56600162749840.

The previous prime is 77825223781079. The next prime is 77825223781087. The reversal of 77825223781085 is 58018732252877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77825223781085 - 2¹⁸ = 77825223518941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77825223781087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707502034319 + ... + 707502034428.

It is an arithmetic number, because the mean of its divisors is an integer number (12735036618732).

Almost surely, 2^{77825223781085} is an apocalyptic number.

It is an amenable number.

77825223781085 is a deficient number, since it is larger than the sum of its proper divisors (24055069168771).

77825223781085 is a wasteful number, since it uses less digits than its factorization.

77825223781085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415004068763.

The product of its (nonzero) digits is 105369600, while the sum is 65.

The spelling of 77825223781085 in words is "seventy-seven trillion, eight hundred twenty-five billion, two hundred twenty-three million, seven hundred eighty-one thousand, eighty-five".