25989264 has 240 divisors, whose sum is σ = 92851200. Its totient is φ = 6614784.

The previous prime is 25989251. The next prime is 25989289. The reversal of 25989264 is 46298952.

It is a nialpdrome in base 12.

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, 440467 + ... + 440525.

It is an arithmetic number, because the mean of its divisors is an integer number (386880).

Almost surely, 2^25989264 is an apocalyptic number.

25989264 is a gapful number since it is divisible by the number (24) 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 25989264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46425600).

25989264 is an abundant number, since it is smaller than the sum of its proper divisors (66861936).

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

25989264 is a wasteful number, since it uses less digits than its factorization.

25989264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 113 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 25989264 is about 5097.9666534806. The cubic root of 25989264 is about 296.2088251273.

The spelling of 25989264 in words is "twenty-five million, nine hundred eighty-nine thousand, two hundred sixty-four".