25587474432 has 168 divisors, whose sum is σ = 73738048104. Its totient is φ = 7845249024.

The previous prime is 25587474421. The next prime is 25587474443. The reversal of 25587474432 is 23447478552.

It is an interprime number because it is at equal distance from previous prime (25587474421) and next prime (25587474443).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90414963 + ... + 90415245.

It is an arithmetic number, because the mean of its divisors is an integer number (438916953).

Almost surely, 2^25587474432 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 25587474432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36869024052).

25587474432 is an abundant number, since it is smaller than the sum of its proper divisors (48150573672).

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

25587474432 is an frugal number, since it uses more digits than its factorization.

25587474432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 301 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 51.

The spelling of 25587474432 in words is "twenty-five billion, five hundred eighty-seven million, four hundred seventy-four thousand, four hundred thirty-two".