2560274657 has 8 divisors (see below), whose sum is σ = 2698534440. Its totient is φ = 2425346560.

The previous prime is 2560274641. The next prime is 2560274669. The reversal of 2560274657 is 7564720652.

It can be written as a sum of positive squares in 4 ways, for example, as 1093691041 + 1466583616 = 33071^2 + 38296^2 .

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

It is not a de Polignac number, because 2560274657 - 2⁴ = 2560274641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560274617) 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, 831344 + ... + 834417.

It is an arithmetic number, because the mean of its divisors is an integer number (337316805).

Almost surely, 2^2560274657 is an apocalyptic number.

It is an amenable number.

2560274657 is a deficient number, since it is larger than the sum of its proper divisors (138259783).

2560274657 is a wasteful number, since it uses less digits than its factorization.

2560274657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665843.

The product of its (nonzero) digits is 705600, while the sum is 44.

The square root of 2560274657 is about 50599.1566826958. The cubic root of 2560274657 is about 1368.0296781818.

The spelling of 2560274657 in words is "two billion, five hundred sixty million, two hundred seventy-four thousand, six hundred fifty-seven".