27785875325 has 24 divisors (see below), whose sum is σ = 37128701736. Its totient is φ = 20505600000.

The previous prime is 27785875261. The next prime is 27785875379. The reversal of 27785875325 is 52357858772.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 7244392996 + 20541482329 = 85114^2 + 143323^2 .

It is not a de Polignac number, because 27785875325 - 2⁶ = 27785875261 is a prime.

It is a Duffinian number.

It is a Curzon 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, 493625 + ... + 547025.

It is an arithmetic number, because the mean of its divisors is an integer number (1547029239).

Almost surely, 2^27785875325 is an apocalyptic number.

27785875325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27785875325 is a deficient number, since it is larger than the sum of its proper divisors (9342826411).

27785875325 is a wasteful number, since it uses less digits than its factorization.

27785875325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55025 (or 55020 counting only the distinct ones).

The product of its digits is 32928000, while the sum is 59.

The spelling of 27785875325 in words is "twenty-seven billion, seven hundred eighty-five million, eight hundred seventy-five thousand, three hundred twenty-five".