25514703648 has 96 divisors (see below), whose sum is σ = 85049032320. Its totient is φ = 7289913600.

The previous prime is 25514703637. The next prime is 25514703649. The reversal of 25514703648 is 84630741552.

25514703648 is a `hidden beast` number, since 2 + 5 + 514 + 70 + 3 + 64 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (25514703649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2103303 + ... + 2115398.

It is an arithmetic number, because the mean of its divisors is an integer number (885927420).

Almost surely, 2^25514703648 is an apocalyptic number.

25514703648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25514703648 is an abundant number, since it is smaller than the sum of its proper divisors (59534328672).

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

25514703648 is a wasteful number, since it uses less digits than its factorization.

25514703648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218727 (or 4218713 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 25514703648 in words is "twenty-five billion, five hundred fourteen million, seven hundred three thousand, six hundred forty-eight".