25322531 has 8 divisors (see below), whose sum is σ = 27393744. Its totient is φ = 23268960.

The previous prime is 25322489. The next prime is 25322569. The reversal of 25322531 is 13522352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25322531 is a prime.

It is a super-2 number, since 2×25322531² = 1282461152491922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25322497 and 25322506.

It is not an unprimeable number, because it can be changed into a prime (25322831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (3424218).

Almost surely, 2^25322531 is an apocalyptic number.

25322531 is a deficient number, since it is larger than the sum of its proper divisors (2071213).

25322531 is a wasteful number, since it uses less digits than its factorization.

25322531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821.

The product of its digits is 1800, while the sum is 23.

The square root of 25322531 is about 5032.1497394255. The cubic root of 25322531 is about 293.6538531875.

Adding to 25322531 its reverse (13522352), we get a palindrome (38844883).

The spelling of 25322531 in words is "twenty-five million, three hundred twenty-two thousand, five hundred thirty-one".