67336220398225 has 27 divisors (see below), whose sum is σ = 84109055734587. Its totient is φ = 53476900088880.

The previous prime is 67336220398211. The next prime is 67336220398247. The reversal of 67336220398225 is 52289302263376.

The square root of 67336220398225 is 8205865.

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., 24241039343361 + 43095181054864 = 4923519^2 + 6564692^2 .

It is not a de Polignac number, because 67336220398225 - 2⁵ = 67336220398193 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 67336220398225.

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, 5703070272 + ... + 5703082078.

Almost surely, 2^{67336220398225} is an apocalyptic number.

67336220398225 is the 8205865-th square number.

67336220398225 is the 4102933-rd centered octagonal number.

It is an amenable number.

67336220398225 is a deficient number, since it is larger than the sum of its proper divisors (16772835336362).

67336220398225 is an frugal number, since it uses more digits than its factorization.

67336220398225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23902 (or 11951 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 58.

The spelling of 67336220398225 in words is "sixty-seven trillion, three hundred thirty-six billion, two hundred twenty million, three hundred ninety-eight thousand, two hundred twenty-five".