2560256551 has 8 divisors (see below), whose sum is σ = 2714274944. Its totient is φ = 2410702560.

The previous prime is 2560256539. The next prime is 2560256557. The reversal of 2560256551 is 1556520652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2560256551 - 2⁵ = 2560256519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2560256551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560256557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114920 + ... + 1117213.

It is an arithmetic number, because the mean of its divisors is an integer number (339284368).

Almost surely, 2^2560256551 is an apocalyptic number.

2560256551 is a deficient number, since it is larger than the sum of its proper divisors (154018393).

2560256551 is a wasteful number, since it uses less digits than its factorization.

2560256551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232201.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2560256551 is about 50598.9777663541. The cubic root of 2560256551 is about 1368.0264533190.

The spelling of 2560256551 in words is "two billion, five hundred sixty million, two hundred fifty-six thousand, five hundred fifty-one".