1063990839825 has 72 divisors (see below), whose sum is σ = 1947642592896. Its totient is φ = 554997360000.

The previous prime is 1063990839811. The next prime is 1063990839827. The reversal of 1063990839825 is 5289380993601.

1063990839825 is a `hidden beast` number, since 106 + 39 + 90 + 8 + 398 + 25 = 666.

It is not a de Polignac number, because 1063990839825 - 2⁹ = 1063990839313 is a prime.

It is a super-2 number, since 2×1063990839825² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1063990839827) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 15309655 + ... + 15378995.

It is an arithmetic number, because the mean of its divisors is an integer number (27050591568).

Almost surely, 2^{1063990839825} is an apocalyptic number.

1063990839825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1063990839825 is a deficient number, since it is larger than the sum of its proper divisors (883651753071).

1063990839825 is a wasteful number, since it uses less digits than its factorization.

1063990839825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70855 (or 70847 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 1063990839825 in words is "one trillion, sixty-three billion, nine hundred ninety million, eight hundred thirty-nine thousand, eight hundred twenty-five".