25025748552 has 256 divisors, whose sum is σ = 87779635200. Its totient is φ = 6436869120.

The previous prime is 25025748509. The next prime is 25025748557. The reversal of 25025748552 is 25584752052.

25025748552 is a `hidden beast` number, since 2 + 5 + 0 + 2 + 57 + 48 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25025748498 and 25025748507.

It is not an unprimeable number, because it can be changed into a prime (25025748557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 570027 + ... + 612357.

It is an arithmetic number, because the mean of its divisors is an integer number (342889200).

Almost surely, 2^25025748552 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 25025748552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43889817600).

25025748552 is an abundant number, since it is smaller than the sum of its proper divisors (62753886648).

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

25025748552 is a wasteful number, since it uses less digits than its factorization.

25025748552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42393 (or 42383 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 45.

The spelling of 25025748552 in words is "twenty-five billion, twenty-five million, seven hundred forty-eight thousand, five hundred fifty-two".