25505000255 has 32 divisors (see below), whose sum is σ = 35368939008. Its totient is φ = 17294256000.

The previous prime is 25505000251. The next prime is 25505000273. The reversal of 25505000255 is 55200050552.

It is a happy number.

It is not a de Polignac number, because 25505000255 - 2² = 25505000251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505000251) 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, 3117320 + ... + 3125490.

It is an arithmetic number, because the mean of its divisors is an integer number (1105279344).

Almost surely, 2^25505000255 is an apocalyptic number.

25505000255 is a deficient number, since it is larger than the sum of its proper divisors (9863938753).

25505000255 is a wasteful number, since it uses less digits than its factorization.

25505000255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167.

The product of its (nonzero) digits is 12500, while the sum is 29.

The spelling of 25505000255 in words is "twenty-five billion, five hundred five million, two hundred fifty-five", and thus it is an aban number.