25435666668 has 24 divisors (see below), whose sum is σ = 59357329920. Its totient is φ = 8477492560.

The previous prime is 25435666661. The next prime is 25435666699. The reversal of 25435666668 is 86666653452.

It is not an unprimeable number, because it can be changed into a prime (25435666661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29988 + ... + 227531.

It is an arithmetic number, because the mean of its divisors is an integer number (2473222080).

Almost surely, 2^25435666668 is an apocalyptic number.

It is an amenable number.

25435666668 is an abundant number, since it is smaller than the sum of its proper divisors (33921663252).

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

25435666668 is a wasteful number, since it uses less digits than its factorization.

25435666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265757 (or 265755 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 57.

The spelling of 25435666668 in words is "twenty-five billion, four hundred thirty-five million, six hundred sixty-six thousand, six hundred sixty-eight".