2678650789825 has 12 divisors (see below), whose sum is σ = 3321557131068. Its totient is φ = 2142901179200.

The previous prime is 2678650789819. The next prime is 2678650789847. The reversal of 2678650789825 is 5289870568762.

It can be written as a sum of positive squares in 6 ways, for example, as 911782446129 + 1766868343696 = 954873^2 + 1329236^2 .

It is not a de Polignac number, because 2678650789825 - 2¹¹ = 2678650787777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2743335 + ... + 3589315.

It is an arithmetic number, because the mean of its divisors is an integer number (276796427589).

Almost surely, 2^{2678650789825} is an apocalyptic number.

2678650789825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2678650789825 is a deficient number, since it is larger than the sum of its proper divisors (642906341243).

2678650789825 is a wasteful number, since it uses less digits than its factorization.

2678650789825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972644 (or 972639 counting only the distinct ones).

The product of its (nonzero) digits is 812851200, while the sum is 73.

The spelling of 2678650789825 in words is "two trillion, six hundred seventy-eight billion, six hundred fifty million, seven hundred eighty-nine thousand, eight hundred twenty-five".