2556256245 has 16 divisors (see below), whose sum is σ = 4094001792. Its totient is φ = 1362006080.

The previous prime is 2556256237. The next prime is 2556256321. The reversal of 2556256245 is 5426526552.

It is not a de Polignac number, because 2556256245 - 2³ = 2556256237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556256197 and 2556256206.

It is a congruent number.

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, 67182 + ... + 98111.

It is an arithmetic number, because the mean of its divisors is an integer number (255875112).

Almost surely, 2^2556256245 is an apocalyptic number.

It is an amenable number.

2556256245 is a deficient number, since it is larger than the sum of its proper divisors (1537745547).

2556256245 is a wasteful number, since it uses less digits than its factorization.

2556256245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166332.

The product of its digits is 720000, while the sum is 42.

The square root of 2556256245 is about 50559.4327994292. The cubic root of 2556256245 is about 1367.3135850312.

The spelling of 2556256245 in words is "two billion, five hundred fifty-six million, two hundred fifty-six thousand, two hundred forty-five".