25685296 has 120 divisors (see below), whose sum is σ = 65352960. Its totient is φ = 9554688.

The previous prime is 25685291. The next prime is 25685299. The reversal of 25685296 is 69258652.

It is not an unprimeable number, because it can be changed into a prime (25685291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435315 + ... + 435373.

It is an arithmetic number, because the mean of its divisors is an integer number (544608).

Almost surely, 2^25685296 is an apocalyptic number.

25685296 is a gapful number since it is divisible by the number (26) 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 25685296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32676480).

25685296 is an abundant number, since it is smaller than the sum of its proper divisors (39667664).

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

25685296 is a wasteful number, since it uses less digits than its factorization.

25685296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 104 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 25685296 is about 5068.0662979089. The cubic root of 25685296 is about 295.0494832247.

The spelling of 25685296 in words is "twenty-five million, six hundred eighty-five thousand, two hundred ninety-six".