6734664225 has 27 divisors (see below), whose sum is σ = 12064737139. Its totient is φ = 3591164400.

The previous prime is 6734664217. The next prime is 6734664227. The reversal of 6734664225 is 5224664376.

The square root of 6734664225 is 82065.

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., 2424479121 + 4310185104 = 49239^2 + 65652^2 .

It is not a de Polignac number, because 6734664225 - 2³ = 6734664217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6734664227) 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, 1228240 + ... + 1233710.

Almost surely, 2^6734664225 is an apocalyptic number.

6734664225 is the 82065-th square number.

6734664225 is the 41033-rd centered octagonal number.

It is an amenable number.

6734664225 is a deficient number, since it is larger than the sum of its proper divisors (5330072914).

6734664225 is an frugal number, since it uses more digits than its factorization.

6734664225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958 (or 5479 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The cubic root of 6734664225 is about 1888.4492402412.

The spelling of 6734664225 in words is "six billion, seven hundred thirty-four million, six hundred sixty-four thousand, two hundred twenty-five".