25548547493440 has 112 divisors (see below), whose sum is σ = 61963697134080. Its totient is φ = 10031733504000.

The previous prime is 25548547493437. The next prime is 25548547493473. The reversal of 25548547493440 is 4439474584552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 1452565 + ... + 7294315.

It is an arithmetic number, because the mean of its divisors is an integer number (553247295840).

Almost surely, 2^{25548547493440} is an apocalyptic number.

25548547493440 is a gapful number since it is divisible by the number (20) 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 25548547493440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30981848567040).

25548547493440 is an abundant number, since it is smaller than the sum of its proper divisors (36415149640640).

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

25548547493440 is a wasteful number, since it uses less digits than its factorization.

25548547493440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842020 (or 5842010 counting only the distinct ones).

The product of its (nonzero) digits is 387072000, while the sum is 64.

The spelling of 25548547493440 in words is "twenty-five trillion, five hundred forty-eight billion, five hundred forty-seven million, four hundred ninety-three thousand, four hundred forty".