25338456 has 192 divisors, whose sum is σ = 84913920. Its totient is φ = 6716160.

The previous prime is 25338407. The next prime is 25338473. The reversal of 25338456 is 65483352.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25338456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236755 + ... + 236861.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

Almost surely, 2^25338456 is an apocalyptic number.

25338456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25338456 is the 2691-st nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25338456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42456960).

25338456 is an abundant number, since it is smaller than the sum of its proper divisors (59575464).

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

25338456 is a wasteful number, since it uses less digits than its factorization.

25338456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 159 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 25338456 is about 5033.7318164559. The cubic root of 25338456 is about 293.7153986104.

Subtracting 25338456 from its reverse (65483352), we obtain a square (40144896 = 6336²).

The spelling of 25338456 in words is "twenty-five million, three hundred thirty-eight thousand, four hundred fifty-six".