2025666040 has 32 divisors (see below), whose sum is σ = 4632471360. Its totient is φ = 796982400.

The previous prime is 2025666031. The next prime is 2025666061. The reversal of 2025666040 is 406665202.

It is a junction number, because it is equal to n+sod(n) for n = 2025665993 and 2025666011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412656 + ... + 417535.

It is an arithmetic number, because the mean of its divisors is an integer number (144764730).

Almost surely, 2^2025666040 is an apocalyptic number.

2025666040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2025666040 is an abundant number, since it is smaller than the sum of its proper divisors (2606805320).

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

2025666040 is a wasteful number, since it uses less digits than its factorization.

2025666040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830263 (or 830259 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2025666040 is about 45007.3998360270. The cubic root of 2025666040 is about 1265.2876888945.

The spelling of 2025666040 in words is "two billion, twenty-five million, six hundred sixty-six thousand, forty".