25613343456 has 24 divisors (see below), whose sum is σ = 67235026824. Its totient is φ = 8537781120.

The previous prime is 25613343409. The next prime is 25613343461. The reversal of 25613343456 is 65434331652.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 133402735 + ... + 133402926.

It is an arithmetic number, because the mean of its divisors is an integer number (2801459451).

Almost surely, 2^25613343456 is an apocalyptic number.

It is an amenable number.

25613343456 is an abundant number, since it is smaller than the sum of its proper divisors (41621683368).

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

25613343456 is a wasteful number, since it uses less digits than its factorization.

25613343456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266805674 (or 266805666 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

The spelling of 25613343456 in words is "twenty-five billion, six hundred thirteen million, three hundred forty-three thousand, four hundred fifty-six".