2728806925 has 12 divisors (see below), whose sum is σ = 3644007220. Its totient is φ = 2015118720.

The previous prime is 2728806911. The next prime is 2728807031. The reversal of 2728806925 is 5296088272.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 470846601 + 2257960324 = 21699^2 + 47518^2 .

It is not a de Polignac number, because 2728806925 - 2¹³ = 2728798733 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4197840 + ... + 4198489.

Almost surely, 2^2728806925 is an apocalyptic number.

2728806925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2728806925 is a deficient number, since it is larger than the sum of its proper divisors (915200295).

2728806925 is a wasteful number, since it uses less digits than its factorization.

2728806925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8396352 (or 8396347 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 2728806925 is about 52237.9835464578. The cubic root of 2728806925 is about 1397.4113601890.

The spelling of 2728806925 in words is "two billion, seven hundred twenty-eight million, eight hundred six thousand, nine hundred twenty-five".