1625056656 has 40 divisors (see below), whose sum is σ = 4445010144. Its totient is φ = 509821440.

The previous prime is 1625056627. The next prime is 1625056663. The reversal of 1625056656 is 6566505261.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 994930 + ... + 996561.

Almost surely, 2^1625056656 is an apocalyptic number.

1625056656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1625056656 is an abundant number, since it is smaller than the sum of its proper divisors (2819953488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625056656 is a wasteful number, since it uses less digits than its factorization.

1625056656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991519 (or 1991513 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 1625056656 is about 40311.9914665599. The cubic root of 1625056656 is about 1175.6810070060.

The spelling of 1625056656 in words is "one billion, six hundred twenty-five million, fifty-six thousand, six hundred fifty-six".