25633715680 has 48 divisors (see below), whose sum is σ = 60639939360. Its totient is φ = 10239892992.

The previous prime is 25633715647. The next prime is 25633715683. The reversal of 25633715680 is 8651733652.

It is a self number, because there is not a number n which added to its sum of digits gives 25633715680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25633715683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15301 + ... + 226939.

It is an arithmetic number, because the mean of its divisors is an integer number (1263332070).

Almost surely, 2^25633715680 is an apocalyptic number.

25633715680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25633715680 is an abundant number, since it is smaller than the sum of its proper divisors (35006223680).

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

25633715680 is a wasteful number, since it uses less digits than its factorization.

25633715680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212411 (or 212403 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 25633715680 in words is "twenty-five billion, six hundred thirty-three million, seven hundred fifteen thousand, six hundred eighty".