25105505 has 8 divisors (see below), whose sum is σ = 31098624. Its totient is φ = 19436400.

The previous prime is 25105477. The next prime is 25105523. The reversal of 25105505 is 50550152.

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

It is not a de Polignac number, because 25105505 - 2¹⁴ = 25089121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80831 + ... + 81140.

It is an arithmetic number, because the mean of its divisors is an integer number (3887328).

Almost surely, 2^25105505 is an apocalyptic number.

It is an amenable number.

25105505 is a deficient number, since it is larger than the sum of its proper divisors (5993119).

25105505 is a wasteful number, since it uses less digits than its factorization.

25105505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162007.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 25105505 is about 5010.5393921214. The cubic root of 25105505 is about 292.8125278626.

Adding to 25105505 its reverse (50550152), we get a palindrome (75655657).

The spelling of 25105505 in words is "twenty-five million, one hundred five thousand, five hundred five".