25520828 has 12 divisors (see below), whose sum is σ = 44702280. Its totient is φ = 12748752.

The previous prime is 25520827. The next prime is 25520849. The reversal of 25520828 is 82802552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25520794 and 25520803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25520827) 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 3 ways as a sum of consecutive naturals, for example, 3650 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (3725190).

Almost surely, 2^25520828 is an apocalyptic number.

It is an amenable number.

25520828 is a deficient number, since it is larger than the sum of its proper divisors (19181452).

25520828 is a wasteful number, since it uses less digits than its factorization.

25520828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836 (or 5834 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 25520828 is about 5051.8143275461. The cubic root of 25520828 is about 294.4183809953.

The spelling of 25520828 in words is "twenty-five million, five hundred twenty thousand, eight hundred twenty-eight".