25528027505 has 16 divisors (see below), whose sum is σ = 32261544000. Its totient is φ = 19338189120.

The previous prime is 25528027463. The next prime is 25528027559. The reversal of 25528027505 is 50572082552.

It is a de Polignac number, because none of the positive numbers 2^k-25528027505 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135395 + ... + 263415.

It is an arithmetic number, because the mean of its divisors is an integer number (2016346500).

Almost surely, 2^25528027505 is an apocalyptic number.

It is an amenable number.

25528027505 is a deficient number, since it is larger than the sum of its proper divisors (6733516495).

25528027505 is a wasteful number, since it uses less digits than its factorization.

25528027505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130144.

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 25528027505 in words is "twenty-five billion, five hundred twenty-eight million, twenty-seven thousand, five hundred five".