2539005265 has 4 divisors (see below), whose sum is σ = 3046806324. Its totient is φ = 2031204208.

The previous prime is 2539005251. The next prime is 2539005277. The reversal of 2539005265 is 5625009352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1964971584 + 574033681 = 44328^2 + 23959^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539005265 - 2⁷ = 2539005137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253900522 + ... + 253900531.

It is an arithmetic number, because the mean of its divisors is an integer number (761701581).

Almost surely, 2^2539005265 is an apocalyptic number.

It is an amenable number.

2539005265 is a deficient number, since it is larger than the sum of its proper divisors (507801059).

2539005265 is an equidigital number, since it uses as much as digits as its factorization.

2539005265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507801058.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 2539005265 is about 50388.5429934226. The cubic root of 2539005265 is about 1364.2308529396.

The spelling of 2539005265 in words is "two billion, five hundred thirty-nine million, five thousand, two hundred sixty-five".