2001025692 has 18 divisors (see below), whose sum is σ = 5058148368. Its totient is φ = 667008552.

The previous prime is 2001025673. The next prime is 2001025753. The reversal of 2001025692 is 2965201002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27791988 + ... + 27792059.

Almost surely, 2^2001025692 is an apocalyptic number.

It is an amenable number.

2001025692 is an abundant number, since it is smaller than the sum of its proper divisors (3057122676).

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

2001025692 is a wasteful number, since it uses less digits than its factorization.

2001025692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55584057 (or 55584052 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2001025692 is about 44732.8256652763. The cubic root of 2001025692 is about 1260.1363949097.

Adding to 2001025692 its reverse (2965201002), we get a palindrome (4966226694).

The spelling of 2001025692 in words is "two billion, one million, twenty-five thousand, six hundred ninety-two".