25504513848 has 128 divisors (see below), whose sum is σ = 77333817600. Its totient is φ = 7723900800.

The previous prime is 25504513841. The next prime is 25504513849. The reversal of 25504513848 is 84831540552.

25504513848 is a `hidden beast` number, since 2 + 5 + 50 + 4 + 513 + 84 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25504513841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7057290 + ... + 7060902.

It is an arithmetic number, because the mean of its divisors is an integer number (604170450).

Almost surely, 2^25504513848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25504513848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38666908800).

25504513848 is an abundant number, since it is smaller than the sum of its proper divisors (51829303752).

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

25504513848 is a wasteful number, since it uses less digits than its factorization.

25504513848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610 (or 6600 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The spelling of 25504513848 in words is "twenty-five billion, five hundred four million, five hundred thirteen thousand, eight hundred forty-eight".