256010625205 has 4 divisors (see below), whose sum is σ = 307212750252. Its totient is φ = 204808500160.

The previous prime is 256010625187. The next prime is 256010625229. The reversal of 256010625205 is 502526010652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191985938244 + 64024686961 = 438162^2 + 253031^2 .

It is not a de Polignac number, because 256010625205 - 2⁷ = 256010625077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25601062516 + ... + 25601062525.

It is an arithmetic number, because the mean of its divisors is an integer number (76803187563).

Almost surely, 2^256010625205 is an apocalyptic number.

It is an amenable number.

256010625205 is a deficient number, since it is larger than the sum of its proper divisors (51202125047).

256010625205 is an equidigital number, since it uses as much as digits as its factorization.

256010625205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51202125046.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 256010625205 its reverse (502526010652), we get a palindrome (758536635857).

The spelling of 256010625205 in words is "two hundred fifty-six billion, ten million, six hundred twenty-five thousand, two hundred five".