2605528651 has 4 divisors (see below), whose sum is σ = 2842394904. Its totient is φ = 2368662400.

The previous prime is 2605528649. The next prime is 2605528657. The reversal of 2605528651 is 1568255062.

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

It is a cyclic number.

It is not a de Polignac number, because 2605528651 - 2¹ = 2605528649 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605528657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118433110 + ... + 118433131.

It is an arithmetic number, because the mean of its divisors is an integer number (710598726).

Almost surely, 2^2605528651 is an apocalyptic number.

2605528651 is a deficient number, since it is larger than the sum of its proper divisors (236866253).

2605528651 is a wasteful number, since it uses less digits than its factorization.

2605528651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236866252.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 2605528651 is about 51044.3792302345. The cubic root of 2605528651 is about 1376.0428278074.

The spelling of 2605528651 in words is "two billion, six hundred five million, five hundred twenty-eight thousand, six hundred fifty-one".