2788368025 has 27 divisors (see below), whose sum is σ = 3536931391. Its totient is φ = 2180635280.

The previous prime is 2788367983. The next prime is 2788368031. The reversal of 2788368025 is 5208638872.

It is a happy number.

The square root of 2788368025 is 52805.

It is a perfect power (a square), and thus also a powerful number.

2788368025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1003812489 + 1784555536 = 31683^2 + 42244^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2788368025 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2788368025.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15577386 + ... + 15577564.

Almost surely, 2^2788368025 is an apocalyptic number.

2788368025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2788368025 is the 52805-th square number.

2788368025 is the 26403-rd centered octagonal number.

It is an amenable number.

2788368025 is a deficient number, since it is larger than the sum of its proper divisors (748563366).

2788368025 is an frugal number, since it uses more digits than its factorization.

2788368025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The cubic root of 2788368025 is about 1407.5052754698.

Multiplying 2788368025 by its sum of digits (49), we get a square (136630033225 = 369635²).

The spelling of 2788368025 in words is "two billion, seven hundred eighty-eight million, three hundred sixty-eight thousand, twenty-five".