1025663066553 has 8 divisors (see below), whose sum is σ = 1367850215488. Its totient is φ = 683625647664.

The previous prime is 1025663066327. The next prime is 1025663066621. The reversal of 1025663066553 is 3556603665201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025663066553 - 2¹⁷ = 1025662935481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025663062553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37416526 + ... + 37443927.

It is an arithmetic number, because the mean of its divisors is an integer number (170981276936).

Almost surely, 2^{1025663066553} is an apocalyptic number.

It is an amenable number.

1025663066553 is a deficient number, since it is larger than the sum of its proper divisors (342187148935).

1025663066553 is an equidigital number, since it uses as much as digits as its factorization.

1025663066553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74865023.

The product of its (nonzero) digits is 2916000, while the sum is 48.

The spelling of 1025663066553 in words is "one trillion, twenty-five billion, six hundred sixty-three million, sixty-six thousand, five hundred fifty-three".