25763220 has 216 divisors, whose sum is σ = 95606784. Its totient is φ = 5588352.

The previous prime is 25763207. The next prime is 25763237. The reversal of 25763220 is 2236752.

25763220 is a `hidden beast` number, since 2 + 5 + 7 + 632 + 20 = 666.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 202797 + ... + 202923.

It is an arithmetic number, because the mean of its divisors is an integer number (442624).

Almost surely, 2^25763220 is an apocalyptic number.

25763220 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 25763220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47803392).

25763220 is an abundant number, since it is smaller than the sum of its proper divisors (69843564).

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

25763220 is a wasteful number, since it uses less digits than its factorization.

25763220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 25763220 is about 5075.7482207060. The cubic root of 25763220 is about 295.3475555093.

Adding to 25763220 its reverse (2236752), we get a palindrome (27999972).

The spelling of 25763220 in words is "twenty-five million, seven hundred sixty-three thousand, two hundred twenty".