25313105 has 4 divisors (see below), whose sum is σ = 30375732. Its totient is φ = 20250480.

The previous prime is 25313083. The next prime is 25313107. The reversal of 25313105 is 50131352.

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 20151121 + 5161984 = 4489^2 + 2272^2 .

It is not a de Polignac number, because 25313105 - 2²⁰ = 24264529 is a prime.

It is a super-3 number, since 3×25313105³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25313107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531306 + ... + 2531315.

It is an arithmetic number, because the mean of its divisors is an integer number (7593933).

Almost surely, 2^25313105 is an apocalyptic number.

It is an amenable number.

25313105 is a deficient number, since it is larger than the sum of its proper divisors (5062627).

25313105 is an equidigital number, since it uses as much as digits as its factorization.

25313105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062626.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 25313105 is about 5031.2130743987. The cubic root of 25313105 is about 293.6174123233.

Adding to 25313105 its reverse (50131352), we get a palindrome (75444457).

The spelling of 25313105 in words is "twenty-five million, three hundred thirteen thousand, one hundred five".