25440041000000 has 392 divisors, whose sum is σ = 72888891385248. Its totient is φ = 8706688000000.

The previous prime is 25440040999963. The next prime is 25440041000009. The reversal of 25440041000000 is 14004452.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (25440041000009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 186931979 + ... + 187068021.

Almost surely, 2^{25440041000000} is an apocalyptic number.

25440041000000 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 25440041000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36444445692624).

25440041000000 is an abundant number, since it is smaller than the sum of its proper divisors (47448850385248).

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

25440041000000 is an equidigital number, since it uses as much as digits as its factorization.

25440041000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136113 (or 136078 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 25440041000000 its reverse (14004452), we get a palindrome (25440055004452).

The spelling of 25440041000000 in words is "twenty-five trillion, four hundred forty billion, forty-one million", and thus it is an aban number.