1925388656 has 20 divisors (see below), whose sum is σ = 3732073632. Its totient is φ = 962272896.

The previous prime is 1925388649. The next prime is 1925388667. The reversal of 1925388656 is 6568835291.

It is a junction number, because it is equal to n+sod(n) for n = 1925388598 and 1925388607.

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, 13145 + ... + 63431.

Almost surely, 2^1925388656 is an apocalyptic number.

1925388656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1925388656 is a deficient number, since it is larger than the sum of its proper divisors (1806684976).

1925388656 is a wasteful number, since it uses less digits than its factorization.

1925388656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52688 (or 52682 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 53.

The square root of 1925388656 is about 43879.2508596033. The cubic root of 1925388656 is about 1244.0546806539.

The spelling of 1925388656 in words is "one billion, nine hundred twenty-five million, three hundred eighty-eight thousand, six hundred fifty-six".