78005275307525 has 24 divisors (see below), whose sum is σ = 102841302126024. Its totient is φ = 58489676697600.

The previous prime is 78005275307473. The next prime is 78005275307567. The reversal of 78005275307525 is 52570357250087.

It can be written as a sum of positive squares in 12 ways, for example, as 8917826430529 + 69087448876996 = 2986273^2 + 8311886^2 .

It is not a de Polignac number, because 78005275307525 - 2¹⁰ = 78005275306501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380689742 + ... + 380894591.

It is an arithmetic number, because the mean of its divisors is an integer number (4285054255251).

Almost surely, 2^{78005275307525} is an apocalyptic number.

It is an amenable number.

78005275307525 is a deficient number, since it is larger than the sum of its proper divisors (24836026818499).

78005275307525 is a wasteful number, since it uses less digits than its factorization.

78005275307525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761584601 (or 761584596 counting only the distinct ones).

The product of its (nonzero) digits is 20580000, while the sum is 56.

The spelling of 78005275307525 in words is "seventy-eight trillion, five billion, two hundred seventy-five million, three hundred seven thousand, five hundred twenty-five".