25452881748 has 120 divisors (see below), whose sum is σ = 76090577024. Its totient is φ = 7267838400.

The previous prime is 25452881747. The next prime is 25452881761. The reversal of 25452881748 is 84718825452.

25452881748 is a `hidden beast` number, since 2 + 545 + 2 + 88 + 17 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 25452881694 and 25452881703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25452881747) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6327978 + ... + 6331998.

Almost surely, 2^25452881748 is an apocalyptic number.

25452881748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25452881748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38045288512).

25452881748 is an abundant number, since it is smaller than the sum of its proper divisors (50637695276).

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

25452881748 is a wasteful number, since it uses less digits than its factorization.

25452881748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835 (or 6824 counting only the distinct ones).

The product of its digits is 5734400, while the sum is 54.

The spelling of 25452881748 in words is "twenty-five billion, four hundred fifty-two million, eight hundred eighty-one thousand, seven hundred forty-eight".