25434983232 has 448 divisors, whose sum is σ = 82164326400. Its totient is φ = 7688079360.

The previous prime is 25434983209. The next prime is 25434983237. The reversal of 25434983232 is 23238943452.

25434983232 is a `hidden beast` number, since 2 + 543 + 4 + 9 + 83 + 23 + 2 = 666.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434983237) 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, 81784357 + ... + 81784667.

Almost surely, 2^25434983232 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 25434983232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41082163200).

25434983232 is an abundant number, since it is smaller than the sum of its proper divisors (56729343168).

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

25434983232 is a wasteful number, since it uses less digits than its factorization.

25434983232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 435 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The spelling of 25434983232 in words is "twenty-five billion, four hundred thirty-four million, nine hundred eighty-three thousand, two hundred thirty-two".