2555138705 has 8 divisors (see below), whose sum is σ = 3504190272. Its totient is φ = 1752095088.

The previous prime is 2555138693. The next prime is 2555138713. The reversal of 2555138705 is 5078315552.

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 2555138705 - 2⁴ = 2555138689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36501947 + ... + 36502016.

It is an arithmetic number, because the mean of its divisors is an integer number (438023784).

Almost surely, 2^2555138705 is an apocalyptic number.

It is an amenable number.

2555138705 is a deficient number, since it is larger than the sum of its proper divisors (949051567).

2555138705 is an equidigital number, since it uses as much as digits as its factorization.

2555138705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73003975.

The product of its (nonzero) digits is 210000, while the sum is 41.

The square root of 2555138705 is about 50548.3798454510. The cubic root of 2555138705 is about 1367.1143026686.

The spelling of 2555138705 in words is "two billion, five hundred fifty-five million, one hundred thirty-eight thousand, seven hundred five".