25531323 has 4 divisors (see below), whose sum is σ = 34041768. Its totient is φ = 17020880.

The previous prime is 25531301. The next prime is 25531327. The reversal of 25531323 is 32313552.

It is a happy number.

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 25531323 - 2⁹ = 25530811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25531293 and 25531302.

It is not an unprimeable number, because it can be changed into a prime (25531327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255218 + ... + 4255223.

It is an arithmetic number, because the mean of its divisors is an integer number (8510442).

Almost surely, 2^25531323 is an apocalyptic number.

25531323 is a deficient number, since it is larger than the sum of its proper divisors (8510445).

25531323 is an equidigital number, since it uses as much as digits as its factorization.

25531323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510444.

The product of its digits is 2700, while the sum is 24.

The square root of 25531323 is about 5052.8529564989. The cubic root of 25531323 is about 294.4587336235.

Adding to 25531323 its reverse (32313552), we get a palindrome (57844875).

The spelling of 25531323 in words is "twenty-five million, five hundred thirty-one thousand, three hundred twenty-three".