25768530216 has 128 divisors (see below), whose sum is σ = 84093206400. Its totient is φ = 7207971840.

The previous prime is 25768530211. The next prime is 25768530287. The reversal of 25768530216 is 61203586752.

25768530216 is a `hidden beast` number, since 2 + 57 + 68 + 530 + 2 + 1 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (25768530211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386241 + ... + 448016.

It is an arithmetic number, because the mean of its divisors is an integer number (656978175).

Almost surely, 2^25768530216 is an apocalyptic number.

25768530216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25768530216 is an abundant number, since it is smaller than the sum of its proper divisors (58324676184).

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

25768530216 is a wasteful number, since it uses less digits than its factorization.

25768530216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834296 (or 834286 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 25768530216 in words is "twenty-five billion, seven hundred sixty-eight million, five hundred thirty thousand, two hundred sixteen".