25516430565630 has 64 divisors (see below), whose sum is σ = 65278543334400. Its totient is φ = 6364657952640.

The previous prime is 25516430565557. The next prime is 25516430565673. The reversal of 25516430565630 is 3656503461552.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283281981 + ... + 283372040.

It is an arithmetic number, because the mean of its divisors is an integer number (1019977239600).

Almost surely, 2^{25516430565630} is an apocalyptic number.

25516430565630 is an abundant number, since it is smaller than the sum of its proper divisors (39762112768770).

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

25516430565630 is a wasteful number, since it uses less digits than its factorization.

25516430565630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566654129.

The product of its (nonzero) digits is 9720000, while the sum is 51.

The spelling of 25516430565630 in words is "twenty-five trillion, five hundred sixteen billion, four hundred thirty million, five hundred sixty-five thousand, six hundred thirty".