2557701265 has 40 divisors (see below), whose sum is σ = 3598836840. Its totient is φ = 1744920576.

The previous prime is 2557701233. The next prime is 2557701329. The reversal of 2557701265 is 5621077552.

It can be written as a sum of positive squares in 4 ways, for example, as 1036389249 + 1521312016 = 32193^2 + 39004^2 .

It is not a de Polignac number, because 2557701265 - 2⁵ = 2557701233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3084871 + ... + 3085699.

It is an arithmetic number, because the mean of its divisors is an integer number (89970921).

Almost surely, 2^2557701265 is an apocalyptic number.

It is an amenable number.

2557701265 is a deficient number, since it is larger than the sum of its proper divisors (1041135575).

2557701265 is an frugal number, since it uses more digits than its factorization.

2557701265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 2557701265 is about 50573.7210910963. The cubic root of 2557701265 is about 1367.5711783117.

The spelling of 2557701265 in words is "two billion, five hundred fifty-seven million, seven hundred one thousand, two hundred sixty-five".