25061305 has 4 divisors (see below), whose sum is σ = 30073572. Its totient is φ = 20049040.

The previous prime is 25061287. The next prime is 25061327. The reversal of 25061305 is 50316052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6295081 + 18766224 = 2509^2 + 4332^2 .

It is not a de Polignac number, because 25061305 - 2⁹ = 25060793 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2506126 + ... + 2506135.

It is an arithmetic number, because the mean of its divisors is an integer number (7518393).

Almost surely, 2^25061305 is an apocalyptic number.

It is an amenable number.

25061305 is a deficient number, since it is larger than the sum of its proper divisors (5012267).

25061305 is an equidigital number, since it uses as much as digits as its factorization.

25061305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012266.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 25061305 is about 5006.1267462980. The cubic root of 25061305 is about 292.6405879308.

Adding to 25061305 its reverse (50316052), we get a palindrome (75377357).

The spelling of 25061305 in words is "twenty-five million, sixty-one thousand, three hundred five".