25985400 has 192 divisors, whose sum is σ = 96422400. Its totient is φ = 5660160.

The previous prime is 25985357. The next prime is 25985411. The reversal of 25985400 is 458952.

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, 96466 + ... + 96734.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^25985400 is an apocalyptic number.

25985400 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 25985400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

25985400 is an abundant number, since it is smaller than the sum of its proper divisors (70437000).

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

25985400 is a wasteful number, since it uses less digits than its factorization.

25985400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 25985400 is about 5097.5876647685. The cubic root of 25985400 is about 296.1941446086.

The spelling of 25985400 in words is "twenty-five million, nine hundred eighty-five thousand, four hundred".