25641105 has 32 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 11520192.

The previous prime is 25641103. The next prime is 25641157. The reversal of 25641105 is 50114652.

It is not a de Polignac number, because 25641105 - 2¹ = 25641103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25641103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4126 + ... + 8264.

It is an arithmetic number, because the mean of its divisors is an integer number (1490400).

Almost surely, 2^25641105 is an apocalyptic number.

It is an amenable number.

25641105 is a deficient number, since it is larger than the sum of its proper divisors (22051695).

25641105 is a wasteful number, since it uses less digits than its factorization.

25641105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 25641105 is about 5063.7046714831. The cubic root of 25641105 is about 294.8801773259.

Adding to 25641105 its reverse (50114652), we get a palindrome (75755757).

The spelling of 25641105 in words is "twenty-five million, six hundred forty-one thousand, one hundred five".