25555002505 has 16 divisors (see below), whose sum is σ = 31125752064. Its totient is φ = 20139783040.

The previous prime is 25555002503. The next prime is 25555002511. The reversal of 25555002505 is 50520055552.

It is not a de Polignac number, because 25555002505 - 2¹ = 25555002503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555002503) 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, 52657 + ... + 232126.

It is an arithmetic number, because the mean of its divisors is an integer number (1945359504).

Almost surely, 2^25555002505 is an apocalyptic number.

It is an amenable number.

25555002505 is a deficient number, since it is larger than the sum of its proper divisors (5570749559).

25555002505 is a wasteful number, since it uses less digits than its factorization.

25555002505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285056.

The product of its (nonzero) digits is 62500, while the sum is 34.

The spelling of 25555002505 in words is "twenty-five billion, five hundred fifty-five million, two thousand, five hundred five".