25041451505440 has 96 divisors (see below), whose sum is σ = 61077622910976. Its totient is φ = 9692069422080.

The previous prime is 25041451505387. The next prime is 25041451505453. The reversal of 25041451505440 is 4450515414052.

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

It is a junction number, because it is equal to n+sod(n) for n = 25041451505393 and 25041451505402.

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, 34424529 + ... + 35144431.

It is an arithmetic number, because the mean of its divisors is an integer number (636225238656).

Almost surely, 2^{25041451505440} is an apocalyptic number.

25041451505440 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 25041451505440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30538811455488).

25041451505440 is an abundant number, since it is smaller than the sum of its proper divisors (36036171405536).

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

25041451505440 is a wasteful number, since it uses less digits than its factorization.

25041451505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726962 (or 726954 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

Adding to 25041451505440 its reverse (4450515414052), we get a palindrome (29491966919492).

The spelling of 25041451505440 in words is "twenty-five trillion, forty-one billion, four hundred fifty-one million, five hundred five thousand, four hundred forty".