25330505 has 8 divisors (see below), whose sum is σ = 30423624. Its totient is φ = 20246400.

The previous prime is 25330463. The next prime is 25330507. The reversal of 25330505 is 50503352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5071504 + 20259001 = 2252^2 + 4501^2 .

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

It is not a de Polignac number, because 25330505 - 2¹⁰ = 25329481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25330507) 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, 9965 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (3802953).

Almost surely, 2^25330505 is an apocalyptic number.

It is an amenable number.

25330505 is a deficient number, since it is larger than the sum of its proper divisors (5093119).

25330505 is a wasteful number, since it uses less digits than its factorization.

25330505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507.

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

The square root of 25330505 is about 5032.9419825784. The cubic root of 25330505 is about 293.6846735674.

Adding to 25330505 its reverse (50503352), we get a palindrome (75833857).

The spelling of 25330505 in words is "twenty-five million, three hundred thirty thousand, five hundred five".