25317432 has 96 divisors (see below), whose sum is σ = 79073280. Its totient is φ = 7168320.

The previous prime is 25317419. The next prime is 25317451. The reversal of 25317432 is 23471352.

It is a junction number, because it is equal to n+sod(n) for n = 25317396 and 25317405.

It is a congruent number.

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, 96133 + ... + 96395.

It is an arithmetic number, because the mean of its divisors is an integer number (823680).

Almost surely, 2^25317432 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 25317432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39536640).

25317432 is an abundant number, since it is smaller than the sum of its proper divisors (53755848).

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

25317432 is a wasteful number, since it uses less digits than its factorization.

25317432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 466 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 25317432 is about 5031.6430716020. The cubic root of 25317432 is about 293.6341416045.

Adding to 25317432 its reverse (23471352), we get a palindrome (48788784).

The spelling of 25317432 in words is "twenty-five million, three hundred seventeen thousand, four hundred thirty-two".