1025798164 has 12 divisors (see below), whose sum is σ = 1805176800. Its totient is φ = 510033368.

The previous prime is 1025798159. The next prime is 1025798203. The reversal of 1025798164 is 4618975201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025798164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715624 + ... + 717055.

It is an arithmetic number, because the mean of its divisors is an integer number (150431400).

Almost surely, 2^1025798164 is an apocalyptic number.

It is an amenable number.

1025798164 is a deficient number, since it is larger than the sum of its proper divisors (779378636).

1025798164 is a wasteful number, since it uses less digits than its factorization.

1025798164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432862 (or 1432860 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1025798164 is about 32028.0839888995. The cubic root of 1025798164 is about 1008.5264805027.

The spelling of 1025798164 in words is "one billion, twenty-five million, seven hundred ninety-eight thousand, one hundred sixty-four".