6770821225 has 27 divisors (see below), whose sum is σ = 9770720151. Its totient is φ = 4640874000.

The previous prime is 6770821181. The next prime is 6770821229. The reversal of 6770821225 is 5221280776.

It is a happy number.

The square root of 6770821225 is 82285.

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

It can be written as a sum of positive squares in only one way, i.e., 2437495641 + 4333325584 = 49371^2 + 65828^2 .

It is not a de Polignac number, because 6770821225 - 2⁷ = 6770821097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6770821229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2878800 + ... + 2881150.

Almost surely, 2^6770821225 is an apocalyptic number.

6770821225 is the 82285-th square number.

6770821225 is the 41143-rd centered octagonal number.

It is an amenable number.

6770821225 is a deficient number, since it is larger than the sum of its proper divisors (2999898926).

6770821225 is an frugal number, since it uses more digits than its factorization.

6770821225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The cubic root of 6770821225 is about 1891.8227728194.

The spelling of 6770821225 in words is "six billion, seven hundred seventy million, eight hundred twenty-one thousand, two hundred twenty-five".