1025206664 has 32 divisors (see below), whose sum is σ = 1972965600. Its totient is φ = 499255680.

The previous prime is 1025206657. The next prime is 1025206733. The reversal of 1025206664 is 4666025201.

1025206664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1025206664.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36959 + ... + 58449.

It is an arithmetic number, because the mean of its divisors is an integer number (61655175).

Almost surely, 2^1025206664 is an apocalyptic number.

It is an amenable number.

1025206664 is a deficient number, since it is larger than the sum of its proper divisors (947758936).

1025206664 is a wasteful number, since it uses less digits than its factorization.

1025206664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21653 (or 21649 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1025206664 is about 32018.8485739260. The cubic root of 1025206664 is about 1008.3325963218.

The spelling of 1025206664 in words is "one billion, twenty-five million, two hundred six thousand, six hundred sixty-four".