25488451368 has 192 divisors, whose sum is σ = 72002970000. Its totient is φ = 8138797056.

The previous prime is 25488451367. The next prime is 25488451403. The reversal of 25488451368 is 86315488452.

25488451368 is a `hidden beast` number, since 2 + 5 + 48 + 84 + 513 + 6 + 8 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 16429599684 + 9058851684 = 128178^2 + 95178^2 .

It is a super-2 number, since 2×25488451368² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25488451363) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62318748 + ... + 62319156.

Almost surely, 2^25488451368 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 25488451368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36001485000).

25488451368 is an abundant number, since it is smaller than the sum of its proper divisors (46514518632).

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

25488451368 is a wasteful number, since it uses less digits than its factorization.

25488451368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 757 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 25488451368 in words is "twenty-five billion, four hundred eighty-eight million, four hundred fifty-one thousand, three hundred sixty-eight".