1650668625 has 96 divisors (see below), whose sum is σ = 3187172352. Its totient is φ = 851472000.

The previous prime is 1650668611. The next prime is 1650668629. The reversal of 1650668625 is 5268660561.

It is a happy number.

1650668625 is a `hidden beast` number, since 16 + 5 + 0 + 6 + 6 + 8 + 625 = 666.

It is not a de Polignac number, because 1650668625 - 2⁶ = 1650668561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1650668629) 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 95 ways as a sum of consecutive naturals, for example, 940749 + ... + 942501.

It is an arithmetic number, because the mean of its divisors is an integer number (33199712).

Almost surely, 2^1650668625 is an apocalyptic number.

1650668625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1650668625 is a deficient number, since it is larger than the sum of its proper divisors (1536503727).

1650668625 is an equidigital number, since it uses as much as digits as its factorization.

1650668625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 1650668625 is about 40628.4213943884. The cubic root of 1650668625 is about 1181.8253433088.

The spelling of 1650668625 in words is "one billion, six hundred fifty million, six hundred sixty-eight thousand, six hundred twenty-five".