2788188325 has 54 divisors (see below), whose sum is σ = 3894678242. Its totient is φ = 1968288000.

The previous prime is 2788188287. The next prime is 2788188367. The reversal of 2788188325 is 5238818872.

It can be written as a sum of positive squares in 27 ways, for example, as 1723993441 + 1064194884 = 41521^2 + 32622^2 .

It is not a de Polignac number, because 2788188325 - 2¹¹ = 2788186277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 27605775 + ... + 27605875.

Almost surely, 2^2788188325 is an apocalyptic number.

2788188325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2788188325 is a deficient number, since it is larger than the sum of its proper divisors (1106489917).

2788188325 is a wasteful number, since it uses less digits than its factorization.

2788188325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 148 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 2788188325 is about 52803.2984291701. The cubic root of 2788188325 is about 1407.4750386516.

Multiplying 2788188325 by its sum of digits (52), we get a square (144985792900 = 380770²).

The spelling of 2788188325 in words is "two billion, seven hundred eighty-eight million, one hundred eighty-eight thousand, three hundred twenty-five".