25840825 has 12 divisors (see below), whose sum is σ = 33077248. Its totient is φ = 20005200.

The previous prime is 25840819. The next prime is 25840831. The reversal of 25840825 is 52804852.

It is an interprime number because it is at equal distance from previous prime (25840819) and next prime (25840831).

It is not a de Polignac number, because 25840825 - 2⁹ = 25840313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15897 + ... + 17446.

Almost surely, 2^25840825 is an apocalyptic number.

25840825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25840825 is a deficient number, since it is larger than the sum of its proper divisors (7236423).

25840825 is a wasteful number, since it uses less digits than its factorization.

25840825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33384 (or 33379 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 25840825 is about 5083.3871581850. The cubic root of 25840825 is about 295.6438108107.

The spelling of 25840825 in words is "twenty-five million, eight hundred forty thousand, eight hundred twenty-five".