25115505 has 16 divisors (see below), whose sum is σ = 40271424. Its totient is φ = 13366080.

The previous prime is 25115459. The next prime is 25115509. The reversal of 25115505 is 50551152.

It is not a de Polignac number, because 25115505 - 2¹¹ = 25113457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25115509) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6675 + ... + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (2516964).

Almost surely, 2^25115505 is an apocalyptic number.

It is an amenable number.

25115505 is a deficient number, since it is larger than the sum of its proper divisors (15155919).

25115505 is a wasteful number, since it uses less digits than its factorization.

25115505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 25115505 is about 5011.5371893262. The cubic root of 25115505 is about 292.8514003010.

Adding to 25115505 its reverse (50551152), we get a palindrome (75666657).

The spelling of 25115505 in words is "twenty-five million, one hundred fifteen thousand, five hundred five".