25768780 has 12 divisors (see below), whose sum is σ = 54114480. Its totient is φ = 10307504.

The previous prime is 25768751. The next prime is 25768783. The reversal of 25768780 is 8786752.

It is a happy number.

It is a super-3 number, since 3×25768780³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25768783) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 644200 + ... + 644239.

It is an arithmetic number, because the mean of its divisors is an integer number (4509540).

Almost surely, 2^25768780 is an apocalyptic number.

25768780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25768780 is an abundant number, since it is smaller than the sum of its proper divisors (28345700).

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

25768780 is a wasteful number, since it uses less digits than its factorization.

25768780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288448 (or 1288446 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 25768780 is about 5076.2958936610. The cubic root of 25768780 is about 295.3688004506.

The spelling of 25768780 in words is "twenty-five million, seven hundred sixty-eight thousand, seven hundred eighty".