25763840 has 112 divisors (see below), whose sum is σ = 67235832. Its totient is φ = 9437184.

The previous prime is 25763839. The next prime is 25763851. The reversal of 25763840 is 4836752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25563136 + 200704 = 5056^2 + 448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25763840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696302 + ... + 696338.

Almost surely, 2^25763840 is an apocalyptic number.

25763840 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 25763840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33617916).

25763840 is an abundant number, since it is smaller than the sum of its proper divisors (41471992).

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

25763840 is an equidigital number, since it uses as much as digits as its factorization.

25763840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 25763840 is about 5075.8092950780. The cubic root of 25763840 is about 295.3499247009.

The spelling of 25763840 in words is "twenty-five million, seven hundred sixty-three thousand, eight hundred forty".