2025666100 has 72 divisors (see below), whose sum is σ = 4476026016. Its totient is φ = 795600000.

The previous prime is 2025666061. The next prime is 2025666103. The reversal of 2025666100 is 16665202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2025666103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1322335 + ... + 1323865.

It is an arithmetic number, because the mean of its divisors is an integer number (62167028).

Almost surely, 2^2025666100 is an apocalyptic number.

2025666100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2025666100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238013008).

2025666100 is an abundant number, since it is smaller than the sum of its proper divisors (2450359916).

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

2025666100 is a wasteful number, since it uses less digits than its factorization.

2025666100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2025666100 is about 45007.4005025840. The cubic root of 2025666100 is about 1265.2877013870.

The spelling of 2025666100 in words is "two billion, twenty-five million, six hundred sixty-six thousand, one hundred".