25840275 has 24 divisors (see below), whose sum is σ = 43114800. Its totient is φ = 13655040.

The previous prime is 25840273. The next prime is 25840277. The reversal of 25840275 is 57204852.

It is an interprime number because it is at equal distance from previous prime (25840273) and next prime (25840277).

It is not a de Polignac number, because 25840275 - 2¹ = 25840273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25840273) 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 23 ways as a sum of consecutive naturals, for example, 6951 + ... + 9999.

It is an arithmetic number, because the mean of its divisors is an integer number (1796450).

Almost surely, 2^25840275 is an apocalyptic number.

25840275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25840275 is a deficient number, since it is larger than the sum of its proper divisors (17274525).

25840275 is a wasteful number, since it uses less digits than its factorization.

25840275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175 (or 3170 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25840275 is about 5083.3330601093. Note that the first 3 decimals coincide. The cubic root of 25840275 is about 295.6417132867.

The spelling of 25840275 in words is "twenty-five million, eight hundred forty thousand, two hundred seventy-five".