25520303 has 4 divisors (see below), whose sum is σ = 25530408. Its totient is φ = 25510200.

The previous prime is 25520293. The next prime is 25520309. The reversal of 25520303 is 30302552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25520303 - 2¹² = 25516207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25520309) 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, 2453 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (6382602).

Almost surely, 2^25520303 is an apocalyptic number.

25520303 is a deficient number, since it is larger than the sum of its proper divisors (10105).

25520303 is an equidigital number, since it uses as much as digits as its factorization.

25520303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10104.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 25520303 is about 5051.7623657492. The cubic root of 25520303 is about 294.4163621122.

Adding to 25520303 its reverse (30302552), we get a palindrome (55822855).

The spelling of 25520303 in words is "twenty-five million, five hundred twenty thousand, three hundred three".