25323530 has 16 divisors (see below), whose sum is σ = 45822024. Its totient is φ = 10076160.

The previous prime is 25323469. The next prime is 25323533. The reversal of 25323530 is 3532352.

It can be written as a sum of positive squares in 4 ways, for example, as 12313081 + 13010449 = 3509^2 + 3607^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25323496 and 25323505.

It is not an unprimeable number, because it can be changed into a prime (25323533) 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, 4631 + ... + 8490.

Almost surely, 2^25323530 is an apocalyptic number.

25323530 is a deficient number, since it is larger than the sum of its proper divisors (20498494).

25323530 is a wasteful number, since it uses less digits than its factorization.

25323530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321.

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 25323530 is about 5032.2490001986. The cubic root of 25323530 is about 293.6577147860.

Adding to 25323530 its reverse (3532352), we get a palindrome (28855882).

The spelling of 25323530 in words is "twenty-five million, three hundred twenty-three thousand, five hundred thirty".