25947862680 has 64 divisors (see below), whose sum is σ = 78166677600. Its totient is φ = 6890711040.

The previous prime is 25947862679. The next prime is 25947862693. The reversal of 25947862680 is 8626874952.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25947862680.

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 15 ways as a sum of consecutive naturals, for example, 419695 + ... + 477534.

Almost surely, 2^25947862680 is an apocalyptic number.

25947862680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25947862680 is an abundant number, since it is smaller than the sum of its proper divisors (52218814920).

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

25947862680 is a wasteful number, since it uses less digits than its factorization.

25947862680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897484 (or 897480 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 25947862680 in words is "twenty-five billion, nine hundred forty-seven million, eight hundred sixty-two thousand, six hundred eighty".