25533313 has 4 divisors (see below), whose sum is σ = 27497428. Its totient is φ = 23569200.

The previous prime is 25533281. The next prime is 25533317. The reversal of 25533313 is 31333552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3415104 + 22118209 = 1848^2 + 4703^2 .

It is a cyclic number.

It is not a de Polignac number, because 25533313 - 2⁵ = 25533281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25533317) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 982038 + ... + 982063.

It is an arithmetic number, because the mean of its divisors is an integer number (6874357).

Almost surely, 2^25533313 is an apocalyptic number.

It is an amenable number.

25533313 is a deficient number, since it is larger than the sum of its proper divisors (1964115).

25533313 is a wasteful number, since it uses less digits than its factorization.

25533313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964114.

The product of its digits is 4050, while the sum is 25.

The square root of 25533313 is about 5053.0498711174. The cubic root of 25533313 is about 294.4663838036.

Adding to 25533313 its reverse (31333552), we get a palindrome (56866865).

The spelling of 25533313 in words is "twenty-five million, five hundred thirty-three thousand, three hundred thirteen".