2605458851 has 4 divisors (see below), whose sum is σ = 2630754672. Its totient is φ = 2580163032.

The previous prime is 2605458839. The next prime is 2605458917. The reversal of 2605458851 is 1588545062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2605458851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605458151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12647756 + ... + 12647961.

It is an arithmetic number, because the mean of its divisors is an integer number (657688668).

Almost surely, 2^2605458851 is an apocalyptic number.

2605458851 is a deficient number, since it is larger than the sum of its proper divisors (25295821).

2605458851 is a wasteful number, since it uses less digits than its factorization.

2605458851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25295820.

The product of its (nonzero) digits is 384000, while the sum is 44.

The square root of 2605458851 is about 51043.6955068890. The cubic root of 2605458851 is about 1376.0305400072.

The spelling of 2605458851 in words is "two billion, six hundred five million, four hundred fifty-eight thousand, eight hundred fifty-one".