25768660 has 24 divisors (see below), whose sum is σ = 54239976. Its totient is φ = 10283520.

The previous prime is 25768649. The next prime is 25768667. The reversal of 25768660 is 6686752.

It can be written as a sum of positive squares in 4 ways, for example, as 2862864 + 22905796 = 1692^2 + 4786^2 .

It is a super-3 number, since 3×25768660³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25768667) 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 7 ways as a sum of consecutive naturals, for example, 9184 + ... + 11656.

It is an arithmetic number, because the mean of its divisors is an integer number (2259999).

Almost surely, 2^25768660 is an apocalyptic number.

25768660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25768660 is an abundant number, since it is smaller than the sum of its proper divisors (28471316).

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

25768660 is a wasteful number, since it uses less digits than its factorization.

25768660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003 (or 3001 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 25768660 is about 5076.2840740053. The cubic root of 25768660 is about 295.3683419590.

It can be divided in two parts, 2576 and 8660, that added together give a square (11236 = 106²).

The spelling of 25768660 in words is "twenty-five million, seven hundred sixty-eight thousand, six hundred sixty".