2560825561 has 8 divisors (see below), whose sum is σ = 2931484160. Its totient is φ = 2191373568.

The previous prime is 2560825517. The next prime is 2560825573. The reversal of 2560825561 is 1655280652.

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 2560825561 - 2²⁵ = 2527271129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560825591) 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, 297096 + ... + 305593.

It is an arithmetic number, because the mean of its divisors is an integer number (366435520).

Almost surely, 2^2560825561 is an apocalyptic number.

It is an amenable number.

2560825561 is a deficient number, since it is larger than the sum of its proper divisors (370658599).

2560825561 is an equidigital number, since it uses as much as digits as its factorization.

2560825561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603303.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 2560825561 is about 50604.6001960296. The cubic root of 2560825561 is about 1368.1277925216.

The spelling of 2560825561 in words is "two billion, five hundred sixty million, eight hundred twenty-five thousand, five hundred sixty-one".