25580825 has 12 divisors (see below), whose sum is σ = 32079420. Its totient is φ = 20232960.

The previous prime is 25580809. The next prime is 25580833. The reversal of 25580825 is 52808552.

It can be written as a sum of positive squares in 6 ways, for example, as 1658944 + 23921881 = 1288^2 + 4891^2 .

It is not a de Polignac number, because 25580825 - 2⁴ = 25580809 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3524 + ... + 7973.

It is an arithmetic number, because the mean of its divisors is an integer number (2673285).

Almost surely, 2^25580825 is an apocalyptic number.

25580825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25580825 is a deficient number, since it is larger than the sum of its proper divisors (6498595).

25580825 is a wasteful number, since it uses less digits than its factorization.

25580825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11596 (or 11591 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 25580825 is about 5057.7490052394. The cubic root of 25580825 is about 294.6489168197.

The spelling of 25580825 in words is "twenty-five million, five hundred eighty thousand, eight hundred twenty-five".