25783825 has 12 divisors (see below), whose sum is σ = 32057100. Its totient is φ = 20572160.

The previous prime is 25783799. The next prime is 25783837. The reversal of 25783825 is 52838752.

It can be written as a sum of positive squares in 6 ways, for example, as 261121 + 25522704 = 511^2 + 5052^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25783825 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, 10077 + ... + 12373.

It is an arithmetic number, because the mean of its divisors is an integer number (2671425).

Almost surely, 2^25783825 is an apocalyptic number.

25783825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25783825 is a deficient number, since it is larger than the sum of its proper divisors (6273275).

25783825 is a wasteful number, since it uses less digits than its factorization.

25783825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2751 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 25783825 is about 5077.7775650377. Note that the first 3 decimals coincide. The cubic root of 25783825 is about 295.4262725680.

The spelling of 25783825 in words is "twenty-five million, seven hundred eighty-three thousand, eight hundred twenty-five".