25354243512 has 160 divisors (see below), whose sum is σ = 77223226080. Its totient is φ = 7725300480.

The previous prime is 25354243507. The next prime is 25354243531. The reversal of 25354243512 is 21534245352.

25354243512 is a `hidden beast` number, since 2 + 53 + 54 + 2 + 43 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 853062 + ... + 882282.

It is an arithmetic number, because the mean of its divisors is an integer number (482645163).

Almost surely, 2^25354243512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25354243512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38611613040).

25354243512 is an abundant number, since it is smaller than the sum of its proper divisors (51868982568).

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

25354243512 is a wasteful number, since it uses less digits than its factorization.

25354243512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29355 (or 29342 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 25354243512 its reverse (21534245352), we get a palindrome (46888488864).

The spelling of 25354243512 in words is "twenty-five billion, three hundred fifty-four million, two hundred forty-three thousand, five hundred twelve".