25520323 has 4 divisors (see below), whose sum is σ = 25534440. Its totient is φ = 25506208.

The previous prime is 25520321. The next prime is 25520329. The reversal of 25520323 is 32302552.

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

It is a cyclic number.

It is not a de Polignac number, because 25520323 - 2¹ = 25520321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25520294 and 25520303.

It is not an unprimeable number, because it can be changed into a prime (25520321) 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, 3865 + ... + 8122.

It is an arithmetic number, because the mean of its divisors is an integer number (6383610).

Almost surely, 2^25520323 is an apocalyptic number.

25520323 is a deficient number, since it is larger than the sum of its proper divisors (14117).

25520323 is a wasteful number, since it uses less digits than its factorization.

25520323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14116.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 25520323 is about 5051.7643452560. The cubic root of 25520323 is about 294.4164390225.

Adding to 25520323 its reverse (32302552), we get a palindrome (57822875).

The spelling of 25520323 in words is "twenty-five million, five hundred twenty thousand, three hundred twenty-three".