25540242311430 has 576 divisors, whose sum is σ = 88042924090368. Its totient is φ = 4989417246720.

The previous prime is 25540242311429. The next prime is 25540242311443. The reversal of 25540242311430 is 3411324204552.

It is a happy number.

25540242311430 is a `hidden beast` number, since 2 + 5 + 5 + 402 + 4 + 231 + 14 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1968716424 + ... + 1968729396.

It is an arithmetic number, because the mean of its divisors is an integer number (152852298768).

Almost surely, 2^{25540242311430} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25540242311430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44021462045184).

25540242311430 is an abundant number, since it is smaller than the sum of its proper divisors (62502681778938).

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

25540242311430 is a wasteful number, since it uses less digits than its factorization.

25540242311430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14021 (or 14001 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 25540242311430 its reverse (3411324204552), we get a palindrome (28951566515982).

The spelling of 25540242311430 in words is "twenty-five trillion, five hundred forty billion, two hundred forty-two million, three hundred eleven thousand, four hundred thirty".