25433587668 has 12 divisors (see below), whose sum is σ = 59345037920. Its totient is φ = 8477862552.

The previous prime is 25433587649. The next prime is 25433587691. The reversal of 25433587668 is 86678533452.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059732808 + ... + 1059732831.

Almost surely, 2^25433587668 is an apocalyptic number.

It is an amenable number.

25433587668 is an abundant number, since it is smaller than the sum of its proper divisors (33911450252).

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

25433587668 is a wasteful number, since it uses less digits than its factorization.

25433587668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119465646 (or 2119465644 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 57.

The spelling of 25433587668 in words is "twenty-five billion, four hundred thirty-three million, five hundred eighty-seven thousand, six hundred sixty-eight".