25052451534 has 72 divisors (see below), whose sum is σ = 59700710160. Its totient is φ = 7586916480.

The previous prime is 25052451517. The next prime is 25052451553. The reversal of 25052451534 is 43515425052.

25052451534 is a `hidden beast` number, since 2 + 50 + 5 + 24 + 51 + 534 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5261847 + ... + 5266605.

It is an arithmetic number, because the mean of its divisors is an integer number (829176530).

Almost surely, 2^25052451534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25052451534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29850355080).

25052451534 is an abundant number, since it is smaller than the sum of its proper divisors (34648258626).

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

25052451534 is a wasteful number, since it uses less digits than its factorization.

25052451534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206 (or 7192 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 25052451534 its reverse (43515425052), we get a palindrome (68567876586).

The spelling of 25052451534 in words is "twenty-five billion, fifty-two million, four hundred fifty-one thousand, five hundred thirty-four".