8282780057525 has 12 divisors (see below), whose sum is σ = 10874802993732. Its totient is φ = 6236446160640.

The previous prime is 8282780057521. The next prime is 8282780057533. The reversal of 8282780057525 is 5257500872828.

It can be written as a sum of positive squares in 6 ways, for example, as 97699379761 + 8185080677764 = 312569^2 + 2860958^2 .

It is not a de Polignac number, because 8282780057525 - 2² = 8282780057521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8282780057521) 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, 9744446702 + ... + 9744447551.

It is an arithmetic number, because the mean of its divisors is an integer number (906233582811).

Almost surely, 2^{8282780057525} is an apocalyptic number.

8282780057525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8282780057525 is a deficient number, since it is larger than the sum of its proper divisors (2592022936207).

8282780057525 is a wasteful number, since it uses less digits than its factorization.

8282780057525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19488894280 (or 19488894275 counting only the distinct ones).

The product of its (nonzero) digits is 25088000, while the sum is 59.

The spelling of 8282780057525 in words is "eight trillion, two hundred eighty-two billion, seven hundred eighty million, fifty-seven thousand, five hundred twenty-five".