1650725620 has 24 divisors (see below), whose sum is σ = 3470832288. Its totient is φ = 659469600.

The previous prime is 1650725599. The next prime is 1650725621. The reversal of 1650725620 is 265270561.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650725621) by changing a digit.

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, 34666 + ... + 67105.

It is an arithmetic number, because the mean of its divisors is an integer number (144618012).

Almost surely, 2^1650725620 is an apocalyptic number.

1650725620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1650725620 is an abundant number, since it is smaller than the sum of its proper divisors (1820106668).

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

1650725620 is a wasteful number, since it uses less digits than its factorization.

1650725620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102591 (or 102589 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1650725620 is about 40629.1228061842. The cubic root of 1650725620 is about 1181.8389453444.

The spelling of 1650725620 in words is "one billion, six hundred fifty million, seven hundred twenty-five thousand, six hundred twenty".