1025648663 has 24 divisors (see below), whose sum is σ = 1134892800. Its totient is φ = 926269344.

The previous prime is 1025648653. The next prime is 1025648677. The reversal of 1025648663 is 3668465201.

It is not a de Polignac number, because 1025648663 - 2⁴ = 1025648647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025648663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025648623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2706008 + ... + 2706386.

It is an arithmetic number, because the mean of its divisors is an integer number (47287200).

Almost surely, 2^1025648663 is an apocalyptic number.

1025648663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1025648663 is a deficient number, since it is larger than the sum of its proper divisors (109244137).

1025648663 is a wasteful number, since it uses less digits than its factorization.

1025648663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1025648663 is about 32025.7499990242. The cubic root of 1025648663 is about 1008.4774835207.

The spelling of 1025648663 in words is "one billion, twenty-five million, six hundred forty-eight thousand, six hundred sixty-three".