67772225 has 6 divisors (see below), whose sum is σ = 84037590. Its totient is φ = 54217760.

The previous prime is 67772209. The next prime is 67772227. The reversal of 67772225 is 52227776.

It can be written as a sum of positive squares in 3 ways, for example, as 3964081 + 63808144 = 1991^2 + 7988^2 .

It is not a de Polignac number, because 67772225 - 2⁴ = 67772209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67772227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1355420 + ... + 1355469.

It is an arithmetic number, because the mean of its divisors is an integer number (14006265).

Almost surely, 2^67772225 is an apocalyptic number.

It is an amenable number.

67772225 is a deficient number, since it is larger than the sum of its proper divisors (16265365).

67772225 is a wasteful number, since it uses less digits than its factorization.

67772225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710899 (or 2710894 counting only the distinct ones).

The product of its digits is 82320, while the sum is 38.

The square root of 67772225 is about 8232.3887784774. The cubic root of 67772225 is about 407.7092655953.

The spelling of 67772225 in words is "sixty-seven million, seven hundred seventy-two thousand, two hundred twenty-five".