256525162305 has 16 divisors (see below), whose sum is σ = 416221110144. Its totient is φ = 134886469760.

The previous prime is 256525162249. The next prime is 256525162343. The reversal of 256525162305 is 503261525652.

It is not a de Polignac number, because 256525162305 - 2⁹ = 256525161793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120433284 + ... + 120435413.

It is an arithmetic number, because the mean of its divisors is an integer number (26013819384).

Almost surely, 2^256525162305 is an apocalyptic number.

It is an amenable number.

256525162305 is a deficient number, since it is larger than the sum of its proper divisors (159695947839).

256525162305 is a wasteful number, since it uses less digits than its factorization.

256525162305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240868776.

The product of its (nonzero) digits is 540000, while the sum is 42.

Adding to 256525162305 its reverse (503261525652), we get a palindrome (759786687957).

The spelling of 256525162305 in words is "two hundred fifty-six billion, five hundred twenty-five million, one hundred sixty-two thousand, three hundred five".