25442533 has 4 divisors (see below), whose sum is σ = 25488288. Its totient is φ = 25396780.

The previous prime is 25442497. The next prime is 25442563. The reversal of 25442533 is 33524452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25442533 - 2¹³ = 25434341 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 (25442563) 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, 22033 + ... + 23158.

It is an arithmetic number, because the mean of its divisors is an integer number (6372072).

Almost surely, 2^25442533 is an apocalyptic number.

It is an amenable number.

25442533 is a deficient number, since it is larger than the sum of its proper divisors (45755).

25442533 is an equidigital number, since it uses as much as digits as its factorization.

25442533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45754.

The product of its digits is 14400, while the sum is 28.

The square root of 25442533 is about 5044.0591788757. The cubic root of 25442533 is about 294.1169918644.

Adding to 25442533 its reverse (33524452), we get a palindrome (58966985).

The spelling of 25442533 in words is "twenty-five million, four hundred forty-two thousand, five hundred thirty-three".