1650640925 has 24 divisors (see below), whose sum is σ = 2169504000. Its totient is φ = 1241511680.

The previous prime is 1650640919. The next prime is 1650640961. The reversal of 1650640925 is 5290460561.

It is not a de Polignac number, because 1650640925 - 2⁶ = 1650640861 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 610226 + ... + 612924.

It is an arithmetic number, because the mean of its divisors is an integer number (90396000).

Almost surely, 2^1650640925 is an apocalyptic number.

It is an amenable number.

1650640925 is a deficient number, since it is larger than the sum of its proper divisors (518863075).

1650640925 is a wasteful number, since it uses less digits than its factorization.

1650640925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165 (or 4160 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1650640925 is about 40628.0804985911. The cubic root of 1650640925 is about 1181.8187325038.

The spelling of 1650640925 in words is "one billion, six hundred fifty million, six hundred forty thousand, nine hundred twenty-five".