25955900 has 54 divisors (see below), whose sum is σ = 59527440. Its totient is φ = 9822240.

The previous prime is 25955893. The next prime is 25955903. The reversal of 25955900 is 955952.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25955903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35741 + ... + 36459.

It is an arithmetic number, because the mean of its divisors is an integer number (1102360).

Almost surely, 2^25955900 is an apocalyptic number.

25955900 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 25955900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29763720).

25955900 is an abundant number, since it is smaller than the sum of its proper divisors (33571540).

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

25955900 is a wasteful number, since it uses less digits than its factorization.

25955900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 25955900 is about 5094.6933175609. The cubic root of 25955900 is about 296.0820170823.

The spelling of 25955900 in words is "twenty-five million, nine hundred fifty-five thousand, nine hundred".