25525130347648 has 128 divisors (see below), whose sum is σ = 54403564723200. Its totient is φ = 11886684979200.

The previous prime is 25525130347637. The next prime is 25525130347657. The reversal of 25525130347648 is 84674303152552.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434907361 + ... + 434966047.

It is an arithmetic number, because the mean of its divisors is an integer number (425027849400).

Almost surely, 2^{25525130347648} 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 25525130347648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27201782361600).

25525130347648 is an abundant number, since it is smaller than the sum of its proper divisors (28878434375552).

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

25525130347648 is a wasteful number, since it uses less digits than its factorization.

25525130347648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60798 (or 60786 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 55.

The spelling of 25525130347648 in words is "twenty-five trillion, five hundred twenty-five billion, one hundred thirty million, three hundred forty-seven thousand, six hundred forty-eight".