2605152557045 has 4 divisors (see below), whose sum is σ = 3126183068460. Its totient is φ = 2084122045632.

The previous prime is 2605152557009. The next prime is 2605152557057. The reversal of 2605152557045 is 5407552515062.

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 1383488783524 + 1221663773521 = 1176218^2 + 1105289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605152557045 - 2²⁰ = 2605151508469 is a prime.

It is a congruent 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, 260515255700 + ... + 260515255709.

It is an arithmetic number, because the mean of its divisors is an integer number (781545767115).

Almost surely, 2^{2605152557045} is an apocalyptic number.

It is an amenable number.

2605152557045 is a deficient number, since it is larger than the sum of its proper divisors (521030511415).

2605152557045 is an equidigital number, since it uses as much as digits as its factorization.

2605152557045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521030511414.

The product of its (nonzero) digits is 2100000, while the sum is 47.

The spelling of 2605152557045 in words is "two trillion, six hundred five billion, one hundred fifty-two million, five hundred fifty-seven thousand, forty-five".