25902240 has 192 divisors, whose sum is σ = 100590336. Its totient is φ = 5455872.

The previous prime is 25902229. The next prime is 25902241. The reversal of 25902240 is 4220952.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25902240.

It is not an unprimeable number, because it can be changed into a prime (25902241) 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 31 ways as a sum of consecutive naturals, for example, 43384 + ... + 43976.

It is an arithmetic number, because the mean of its divisors is an integer number (523908).

Almost surely, 2^25902240 is an apocalyptic number.

25902240 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 25902240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50295168).

25902240 is an abundant number, since it is smaller than the sum of its proper divisors (74688096).

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

25902240 is a wasteful number, since it uses less digits than its factorization.

25902240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25902240 is about 5089.4243289394. The cubic root of 25902240 is about 295.8778409969.

The spelling of 25902240 in words is "twenty-five million, nine hundred two thousand, two hundred forty".