25457481400000 has 336 divisors, whose sum is σ = 68860866372480. Its totient is φ = 9280627200000.

The previous prime is 25457481399971. The next prime is 25457481400007. The reversal of 25457481400000 is 418475452.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (25457481400007) 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, 205338030 + ... + 205461970.

It is an arithmetic number, because the mean of its divisors is an integer number (204943054680).

Almost surely, 2^{25457481400000} is an apocalyptic number.

25457481400000 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 25457481400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34430433186240).

25457481400000 is an abundant number, since it is smaller than the sum of its proper divisors (43403384972480).

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

25457481400000 is an equidigital number, since it uses as much as digits as its factorization.

25457481400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124070 (or 124040 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 40.

Adding to 25457481400000 its reverse (418475452), we get a palindrome (25457899875452).

The spelling of 25457481400000 in words is "twenty-five trillion, four hundred fifty-seven billion, four hundred eighty-one million, four hundred thousand".