25242954213834 has 128 divisors (see below), whose sum is σ = 65628273807360. Its totient is φ = 7042654382400.

The previous prime is 25242954213833. The next prime is 25242954213847. The reversal of 25242954213834 is 43831245924252.

25242954213834 is a `hidden beast` number, since 2 + 5 + 2 + 4 + 2 + 9 + 542 + 13 + 83 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25242954213833) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1241379 + ... + 7212969.

It is an arithmetic number, because the mean of its divisors is an integer number (512720889120).

Almost surely, 2^{25242954213834} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25242954213834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32814136903680).

25242954213834 is an abundant number, since it is smaller than the sum of its proper divisors (40385319593526).

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

25242954213834 is a wasteful number, since it uses less digits than its factorization.

25242954213834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971873 (or 5971867 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 54.

The spelling of 25242954213834 in words is "twenty-five trillion, two hundred forty-two billion, nine hundred fifty-four million, two hundred thirteen thousand, eight hundred thirty-four".