25289695840668 has 24 divisors (see below), whose sum is σ = 67439188908672. Its totient is φ = 7225627383024.

The previous prime is 25289695840663. The next prime is 25289695840691. The reversal of 25289695840668 is 86604859698252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25289695840593 and 25289695840602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25289695840663) 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, 150533903730 + ... + 150533903897.

It is an arithmetic number, because the mean of its divisors is an integer number (2809966204528).

Almost surely, 2^{25289695840668} is an apocalyptic number.

25289695840668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25289695840668 is an abundant number, since it is smaller than the sum of its proper divisors (42149493068004).

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

25289695840668 is a wasteful number, since it uses less digits than its factorization.

25289695840668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301067807641 (or 301067807639 counting only the distinct ones).

The product of its (nonzero) digits is 3583180800, while the sum is 78.

The spelling of 25289695840668 in words is "twenty-five trillion, two hundred eighty-nine billion, six hundred ninety-five million, eight hundred forty thousand, six hundred sixty-eight".