2159945925 has 24 divisors (see below), whose sum is σ = 3686311680. Its totient is φ = 1114809600.

The previous prime is 2159945899. The next prime is 2159945971. The reversal of 2159945925 is 5295499512.

It is not a de Polignac number, because 2159945925 - 2⁶ = 2159945861 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, 462180 + ... + 466829.

It is an arithmetic number, because the mean of its divisors is an integer number (153596320).

Almost surely, 2^2159945925 is an apocalyptic number.

2159945925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2159945925 is a deficient number, since it is larger than the sum of its proper divisors (1526365755).

2159945925 is a wasteful number, since it uses less digits than its factorization.

2159945925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929053 (or 929048 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The square root of 2159945925 is about 46475.2183964745. The cubic root of 2159945925 is about 1292.6500267943.

The spelling of 2159945925 in words is "two billion, one hundred fifty-nine million, nine hundred forty-five thousand, nine hundred twenty-five".