25921260 has 144 divisors (see below), whose sum is σ = 85621536. Its totient is φ = 6322176.

The previous prime is 25921249. The next prime is 25921261. The reversal of 25921260 is 6212952.

25921260 is a `hidden beast` number, since 2 + 592 + 12 + 60 = 666.

It is not an unprimeable number, because it can be changed into a prime (25921261) 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 47 ways as a sum of consecutive naturals, for example, 131482 + ... + 131678.

It is an arithmetic number, because the mean of its divisors is an integer number (594594).

Almost surely, 2^25921260 is an apocalyptic number.

25921260 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 25921260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42810768).

25921260 is an abundant number, since it is smaller than the sum of its proper divisors (59700276).

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

25921260 is a wasteful number, since it uses less digits than its factorization.

25921260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25921260 is about 5091.2925667261. The cubic root of 25921260 is about 295.9502442543.

The spelling of 25921260 in words is "twenty-five million, nine hundred twenty-one thousand, two hundred sixty".