25768730 has 16 divisors (see below), whose sum is σ = 49951944. Its totient is φ = 9514560.

The previous prime is 25768723. The next prime is 25768751. The reversal of 25768730 is 3786752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23551609 + 2217121 = 4853^2 + 1489^2 .

It is a super-3 number, since 3×25768730³ (a number of 23 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 98981 + ... + 99240.

Almost surely, 2^25768730 is an apocalyptic number.

25768730 is a deficient number, since it is larger than the sum of its proper divisors (24183214).

25768730 is a wasteful number, since it uses less digits than its factorization.

25768730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198241.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 25768730 is about 5076.2909688078. The cubic root of 25768730 is about 295.3686094126.

The spelling of 25768730 in words is "twenty-five million, seven hundred sixty-eight thousand, seven hundred thirty".