25797433048640 has 112 divisors (see below), whose sum is σ = 67204541963520. Its totient is φ = 9354309550080.

The previous prime is 25797433048609. The next prime is 25797433048643. The reversal of 25797433048640 is 4684033479752.

It is not an unprimeable number, because it can be changed into a prime (25797433048643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9138200 + ... + 11623319.

Almost surely, 2^{25797433048640} is an apocalyptic number.

25797433048640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25797433048640 is an abundant number, since it is smaller than the sum of its proper divisors (41407108914880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25797433048640 is a wasteful number, since it uses less digits than its factorization.

25797433048640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20761900 (or 20761890 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 62.

The spelling of 25797433048640 in words is "twenty-five trillion, seven hundred ninety-seven billion, four hundred thirty-three million, forty-eight thousand, six hundred forty".