25542234703440 has 1920 divisors, whose sum is σ = 115625172848640. Its totient is φ = 5045715763200.

The previous prime is 25542234703379. The next prime is 25542234703451. The reversal of 25542234703440 is 4430743224552.

It is a happy number.

25542234703440 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 2 + 234 + 70 + 344 + 0 = 666.

It is a super-2 number, since 2×25542234703440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 11986031175 + ... + 11986033305.

It is an arithmetic number, because the mean of its divisors is an integer number (60221444192).

Almost surely, 2^{25542234703440} is an apocalyptic number.

25542234703440 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 25542234703440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57812586424320).

25542234703440 is an abundant number, since it is smaller than the sum of its proper divisors (90082938145200).

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

25542234703440 is a wasteful number, since it uses less digits than its factorization.

25542234703440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 45.

Adding to 25542234703440 its reverse (4430743224552), we get a palindrome (29972977927992).

The spelling of 25542234703440 in words is "twenty-five trillion, five hundred forty-two billion, two hundred thirty-four million, seven hundred three thousand, four hundred forty".