25220330 has 32 divisors (see below), whose sum is σ = 46947600. Its totient is φ = 9748480.

The previous prime is 25220303. The next prime is 25220339. The reversal of 25220330 is 3302252.

It can be written as a sum of positive squares in 8 ways, for example, as 6497401 + 18722929 = 2549^2 + 4327^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25220299 and 25220308.

It is not an unprimeable number, because it can be changed into a prime (25220339) 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 15 ways as a sum of consecutive naturals, for example, 55946 + ... + 56394.

Almost surely, 2^25220330 is an apocalyptic number.

25220330 is a deficient number, since it is larger than the sum of its proper divisors (21727270).

25220330 is a wasteful number, since it uses less digits than its factorization.

25220330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 25220330 is about 5021.9846674398. The cubic root of 25220330 is about 293.2582610342.

Adding to 25220330 its reverse (3302252), we get a palindrome (28522582).

The spelling of 25220330 in words is "twenty-five million, two hundred twenty thousand, three hundred thirty".