25406500268 has 6 divisors (see below), whose sum is σ = 44461375476. Its totient is φ = 12703250132.

The previous prime is 25406500267. The next prime is 25406500271. The reversal of 25406500268 is 86200560452.

It is not an unprimeable number, because it can be changed into a prime (25406500267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175812530 + ... + 3175812537.

It is an arithmetic number, because the mean of its divisors is an integer number (7410229246).

Almost surely, 2^25406500268 is an apocalyptic number.

It is an amenable number.

25406500268 is a deficient number, since it is larger than the sum of its proper divisors (19054875208).

25406500268 is a wasteful number, since it uses less digits than its factorization.

25406500268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351625071 (or 6351625069 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 25406500268 in words is "twenty-five billion, four hundred six million, five hundred thousand, two hundred sixty-eight".