25599960 has 192 divisors, whose sum is σ = 90979200. Its totient is φ = 6217728.

The previous prime is 25599941. The next prime is 25599961. The reversal of 25599960 is 6999552.

25599960 is a `hidden beast` number, since 2 + 559 + 9 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25599961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287596 + ... + 287684.

It is an arithmetic number, because the mean of its divisors is an integer number (473850).

Almost surely, 2^25599960 is an apocalyptic number.

25599960 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 25599960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45489600).

25599960 is an abundant number, since it is smaller than the sum of its proper divisors (65379240).

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

25599960 is a wasteful number, since it uses less digits than its factorization.

25599960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 25599960 is about 5059.6403034208. The cubic root of 25599960 is about 294.7223663898.

The spelling of 25599960 in words is "twenty-five million, five hundred ninety-nine thousand, nine hundred sixty".