25434135432 has 96 divisors (see below), whose sum is σ = 71481009600. Its totient is φ = 8472631104.

The previous prime is 25434135413. The next prime is 25434135449. The reversal of 25434135432 is 23453143452.

25434135432 is a `hidden beast` number, since 2 + 543 + 41 + 35 + 43 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4053994 + ... + 4060262.

It is an arithmetic number, because the mean of its divisors is an integer number (744593850).

Almost surely, 2^25434135432 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 25434135432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35740504800).

25434135432 is an abundant number, since it is smaller than the sum of its proper divisors (46046874168).

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

25434135432 is a wasteful number, since it uses less digits than its factorization.

25434135432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377 (or 8361 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

Adding to 25434135432 its reverse (23453143452), we get a palindrome (48887278884).

The spelling of 25434135432 in words is "twenty-five billion, four hundred thirty-four million, one hundred thirty-five thousand, four hundred thirty-two".