25316400 has 180 divisors, whose sum is σ = 87327992. Its totient is φ = 6266880.

The previous prime is 25316387. The next prime is 25316437. The reversal of 25316400 is 461352.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 346764 + ... + 346836.

Almost surely, 2^25316400 is an apocalyptic number.

25316400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25316400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43663996).

25316400 is an abundant number, since it is smaller than the sum of its proper divisors (62011592).

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

25316400 is a wasteful number, since it uses less digits than its factorization.

25316400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25316400 is about 5031.5405195626. The cubic root of 25316400 is about 293.6301518035.

Adding to 25316400 its reverse (461352), we get a palindrome (25777752).

It can be divided in two parts, 253 and 16400, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 25316400 in words is "twenty-five million, three hundred sixteen thousand, four hundred".