25997740286 has 8 divisors (see below), whose sum is σ = 44567554800. Its totient is φ = 11141888688.

The previous prime is 25997740271. The next prime is 25997740303. The reversal of 25997740286 is 68204779952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 928490711 + ... + 928490738.

It is an arithmetic number, because the mean of its divisors is an integer number (5570944350).

Almost surely, 2^25997740286 is an apocalyptic number.

25997740286 is a deficient number, since it is larger than the sum of its proper divisors (18569814514).

25997740286 is a wasteful number, since it uses less digits than its factorization.

25997740286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856981458.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 25997740286 in words is "twenty-five billion, nine hundred ninety-seven million, seven hundred forty thousand, two hundred eighty-six".