25112105 has 4 divisors (see below), whose sum is σ = 30134532. Its totient is φ = 20089680.

The previous prime is 25112099. The next prime is 25112119. The reversal of 25112105 is 50121152.

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 9909904 + 15202201 = 3148^2 + 3899^2 .

It is not a de Polignac number, because 25112105 - 2¹⁶ = 25046569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2511206 + ... + 2511215.

It is an arithmetic number, because the mean of its divisors is an integer number (7533633).

Almost surely, 2^25112105 is an apocalyptic number.

It is an amenable number.

25112105 is a deficient number, since it is larger than the sum of its proper divisors (5022427).

25112105 is an equidigital number, since it uses as much as digits as its factorization.

25112105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022426.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 25112105 is about 5011.1979605679. The cubic root of 25112105 is about 292.8381848298.

Adding to 25112105 its reverse (50121152), we get a palindrome (75233257).

The spelling of 25112105 in words is "twenty-five million, one hundred twelve thousand, one hundred five".