25505330 has 16 divisors (see below), whose sum is σ = 46557504. Its totient is φ = 10058160.

The previous prime is 25505327. The next prime is 25505339. The reversal of 25505330 is 3350552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25505296 and 25505305.

It is not an unprimeable number, because it can be changed into a prime (25505339) 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 7 ways as a sum of consecutive naturals, for example, 17252 + ... + 18671.

It is an arithmetic number, because the mean of its divisors is an integer number (2909844).

Almost surely, 2^25505330 is an apocalyptic number.

25505330 is a deficient number, since it is larger than the sum of its proper divisors (21052174).

25505330 is a wasteful number, since it uses less digits than its factorization.

25505330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36001.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 25505330 is about 5050.2801902469. The cubic root of 25505330 is about 294.3587719051.

Adding to 25505330 its reverse (3350552), we get a palindrome (28855882).

The spelling of 25505330 in words is "twenty-five million, five hundred five thousand, three hundred thirty".