77504703521825 has 12 divisors (see below), whose sum is σ = 96452784839100. Its totient is φ = 61779922512960.

The previous prime is 77504703521699. The next prime is 77504703521849. The reversal of 77504703521825 is 52812530740577.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 134225511424 + 77370478010401 = 366368^2 + 8796049^2 .

It is not a de Polignac number, because 77504703521825 - 2²⁴ = 77504686744609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5596000550 + ... + 5596014399.

It is an arithmetic number, because the mean of its divisors is an integer number (8037732069925).

Almost surely, 2^{77504703521825} is an apocalyptic number.

It is an amenable number.

77504703521825 is a deficient number, since it is larger than the sum of its proper divisors (18948081317275).

77504703521825 is a wasteful number, since it uses less digits than its factorization.

77504703521825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192015236 (or 11192015231 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 56.

The spelling of 77504703521825 in words is "seventy-seven trillion, five hundred four billion, seven hundred three million, five hundred twenty-one thousand, eight hundred twenty-five".