1625773920 has 192 divisors, whose sum is σ = 5598222336. Its totient is φ = 394813440.

The previous prime is 1625773909. The next prime is 1625773949. The reversal of 1625773920 is 293775261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249747 + ... + 256173.

It is an arithmetic number, because the mean of its divisors is an integer number (29157408).

Almost surely, 2^1625773920 is an apocalyptic number.

1625773920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625773920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799111168).

1625773920 is an abundant number, since it is smaller than the sum of its proper divisors (3972448416).

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

1625773920 is a wasteful number, since it uses less digits than its factorization.

1625773920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493 (or 6485 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 1625773920 is about 40320.8868950077. The cubic root of 1625773920 is about 1175.8539547453.

The spelling of 1625773920 in words is "one billion, six hundred twenty-five million, seven hundred seventy-three thousand, nine hundred twenty".